cve-2026-34479

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Moderate"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright © Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34479.json"
      }
    ],
    "title": "org.apache.logging.log4j/log4j-1.2-api: Apache Log4j 1-to-Log4j 2 bridge: Log processing denial of service due to improper XML escaping",
    "tracking": {
      "current_release_date": "2026-09-04T16:34:37+00:00",
      "generator": {
        "date": "2026-09-04T16:34:37+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "5.3.16"
        }
      },
      "id": "CVE-2026-34479",
      "initial_release_date": "2026-04-10T15:41:07.888000+00:00",
      "revision_history": [
        {
          "date": "2026-04-10T15:41:07.888000+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-07-02T20:35:12+00:00",
          "number": "2",
          "summary": "Current version"
        },
        {
          "date": "2026-09-04T16:34:37+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Data Grid 8",
                "product": {
                  "name": "Red Hat Data Grid 8",
                  "product_id": "red_hat_data_grid_8",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:jboss_data_grid:8"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Data Grid 8"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux 8",
                "product": {
                  "name": "Red Hat Enterprise Linux 8",
                  "product_id": "red_hat_enterprise_linux_8",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:8"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Enterprise Linux 8"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux 9",
                "product": {
                  "name": "Red Hat Enterprise Linux 9",
                  "product_id": "red_hat_enterprise_linux_9",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:9"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Enterprise Linux 9"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Fuse 7",
                "product": {
                  "name": "Red Hat Fuse 7",
                  "product_id": "red_hat_fuse_7",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:jboss_fuse:7"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Fuse 7"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat JBoss Enterprise Application Platform 7",
                "product": {
                  "name": "Red Hat JBoss Enterprise Application Platform 7",
                  "product_id": "red_hat_jboss_enterprise_application_platform_7",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:7"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat JBoss Enterprise Application Platform 7"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat JBoss Enterprise Application Platform 8",
                "product": {
                  "name": "Red Hat JBoss Enterprise Application Platform 8",
                  "product_id": "red_hat_jboss_enterprise_application_platform_8",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:8"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat JBoss Enterprise Application Platform 8"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
                "product": {
                  "name": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
                  "product_id": "red_hat_jboss_enterprise_application_platform_expansion_pack",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:jbosseapxp"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat JBoss Enterprise Application Platform Expansion Pack"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Offline Knowledge Portal",
                "product": {
                  "name": "Red Hat Offline Knowledge Portal",
                  "product_id": "red_hat_offline_knowledge_portal",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:offline_knowledge_portal:1"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Red Hat Offline Knowledge Portal 1.2.6",
                "product": {
                  "name": "Red Hat Offline Knowledge Portal 1.2.6",
                  "product_id": "Red Hat Offline Knowledge Portal 1.2.6",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:offline_knowledge_portal:1.2::el9"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Offline Knowledge Portal"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat OpenShift AI (RHOAI)",
                "product": {
                  "name": "Red Hat OpenShift AI (RHOAI)",
                  "product_id": "red_hat_openshift_ai_(rhoai)",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:openshift_ai"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat OpenShift AI (RHOAI)"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "streams for Apache Kafka 3",
                "product": {
                  "name": "streams for Apache Kafka 3",
                  "product_id": "streams_for_apache_kafka_3",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:amq_streams:3"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "streams for Apache Kafka 3"
          },
          {
            "category": "product_version",
            "name": "log4j-1.2-api",
            "product": {
              "name": "log4j-1.2-api",
              "product_id": "log4j-1.2-api",
              "product_identification_helper": {
                "purl": "pkg:maven/org.apache.logging.log4j/log4j-1.2-api"
              }
            }
          },
          {
            "category": "product_version",
            "name": "log4j-slf4j",
            "product": {
              "name": "log4j-slf4j",
              "product_id": "log4j-slf4j",
              "product_identification_helper": {
                "purl": "pkg:rpm/redhat/log4j-slf4j?rpmmod=log4j:2"
              }
            }
          },
          {
            "category": "product_version",
            "name": "log4j-web",
            "product": {
              "name": "log4j-web",
              "product_id": "log4j-web",
              "product_identification_helper": {
                "purl": "pkg:rpm/redhat/log4j-web?rpmmod=log4j:2"
              }
            }
          },
          {
            "category": "product_version",
            "name": "log4j-jcl",
            "product": {
              "name": "log4j-jcl",
              "product_id": "log4j-jcl",
              "product_identification_helper": {
                "purl": "pkg:rpm/redhat/log4j-jcl?rpmmod=log4j:2"
              }
            }
          },
          {
            "category": "product_version",
            "name": "log4j",
            "product": {
              "name": "log4j",
              "product_id": "log4j",
              "product_identification_helper": {
                "purl": "pkg:rpm/redhat/log4j?rpmmod=log4j:2"
              }
            }
          },
          {
            "category": "product_version",
            "name": "log4j.src",
            "product": {
              "name": "log4j.src",
              "product_id": "log4j.src",
              "product_identification_helper": {
                "purl": "pkg:rpm/redhat/log4j?arch=src"
              }
            }
          },
          {
            "category": "product_version",
            "name": "redhat-user-workloads/rhokp-core-encrypted",
            "product": {
              "name": "redhat-user-workloads/rhokp-core-encrypted",
              "product_id": "redhat-user-workloads/rhokp-core-encrypted",
              "product_identification_helper": {
                "purl": "pkg:oci/rhokp-core-encrypted?repository_url=quay.io/redhat-user-workloads/rhocc-mimir-tenant/mimir/rhokp-core-encrypted"
              }
            }
          },
          {
            "category": "product_version",
            "name": "rhoai/odh-modelmesh-rhel8",
            "product": {
              "name": "rhoai/odh-modelmesh-rhel8",
              "product_id": "rhoai/odh-modelmesh-rhel8",
              "product_identification_helper": {
                "purl": "pkg:oci/odh-modelmesh-rhel8?repository_url=quay.io/rhoai/odh-modelmesh-rhel8"
              }
            }
          },
          {
            "category": "product_version",
            "name": "rhoai/odh-modelmesh-rhel9",
            "product": {
              "name": "rhoai/odh-modelmesh-rhel9",
              "product_id": "rhoai/odh-modelmesh-rhel9",
              "product_identification_helper": {
                "purl": "pkg:oci/odh-modelmesh-rhel9?repository_url=quay.io/rhoai/odh-modelmesh-rhel9"
              }
            }
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:ec8b14b7a170b689a19cee7820888e81ddc3affc2faada6cc6139644f328bd36_amd64",
                "product": {
                  "name": "registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:ec8b14b7a170b689a19cee7820888e81ddc3affc2faada6cc6139644f328bd36_amd64",
                  "product_id": "registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:ec8b14b7a170b689a19cee7820888e81ddc3affc2faada6cc6139644f328bd36_amd64",
                  "product_identification_helper": {
                    "purl": "pkg:oci/rhokp-rhel9@sha256%3Aec8b14b7a170b689a19cee7820888e81ddc3affc2faada6cc6139644f328bd36?arch=amd64&repository_url=registry.redhat.io/offline-knowledge-portal/rhokp-rhel9&tag=1779996999"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "amd64"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:b26253f0a6c6b9e8c8458ecb07e79e9f87ff313491fffc31e342e32bce0a2b3e_arm64",
                "product": {
                  "name": "registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:b26253f0a6c6b9e8c8458ecb07e79e9f87ff313491fffc31e342e32bce0a2b3e_arm64",
                  "product_id": "registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:b26253f0a6c6b9e8c8458ecb07e79e9f87ff313491fffc31e342e32bce0a2b3e_arm64",
                  "product_identification_helper": {
                    "purl": "pkg:oci/rhokp-rhel9@sha256%3Ab26253f0a6c6b9e8c8458ecb07e79e9f87ff313491fffc31e342e32bce0a2b3e?arch=arm64&repository_url=registry.redhat.io/offline-knowledge-portal/rhokp-rhel9&tag=1779996999"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "arm64"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:b26253f0a6c6b9e8c8458ecb07e79e9f87ff313491fffc31e342e32bce0a2b3e_arm64 as a component of Red Hat Offline Knowledge Portal 1.2.6",
          "product_id": "Red Hat Offline Knowledge Portal 1.2.6:registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:b26253f0a6c6b9e8c8458ecb07e79e9f87ff313491fffc31e342e32bce0a2b3e_arm64"
        },
        "product_reference": "registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:b26253f0a6c6b9e8c8458ecb07e79e9f87ff313491fffc31e342e32bce0a2b3e_arm64",
        "relates_to_product_reference": "Red Hat Offline Knowledge Portal 1.2.6"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:ec8b14b7a170b689a19cee7820888e81ddc3affc2faada6cc6139644f328bd36_amd64 as a component of Red Hat Offline Knowledge Portal 1.2.6",
          "product_id": "Red Hat Offline Knowledge Portal 1.2.6:registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:ec8b14b7a170b689a19cee7820888e81ddc3affc2faada6cc6139644f328bd36_amd64"
        },
        "product_reference": "registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:ec8b14b7a170b689a19cee7820888e81ddc3affc2faada6cc6139644f328bd36_amd64",
        "relates_to_product_reference": "Red Hat Offline Knowledge Portal 1.2.6"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "log4j-1.2-api as a component of Red Hat Data Grid 8",
          "product_id": "red_hat_data_grid_8:log4j-1.2-api"
        },
        "product_reference": "log4j-1.2-api",
        "relates_to_product_reference": "red_hat_data_grid_8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "log4j as a component of Red Hat Enterprise Linux 8",
          "product_id": "red_hat_enterprise_linux_8:log4j"
        },
        "product_reference": "log4j",
        "relates_to_product_reference": "red_hat_enterprise_linux_8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "log4j-jcl as a component of Red Hat Enterprise Linux 8",
          "product_id": "red_hat_enterprise_linux_8:log4j-jcl"
        },
        "product_reference": "log4j-jcl",
        "relates_to_product_reference": "red_hat_enterprise_linux_8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "log4j-slf4j as a component of Red Hat Enterprise Linux 8",
          "product_id": "red_hat_enterprise_linux_8:log4j-slf4j"
        },
        "product_reference": "log4j-slf4j",
        "relates_to_product_reference": "red_hat_enterprise_linux_8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "log4j-web as a component of Red Hat Enterprise Linux 8",
          "product_id": "red_hat_enterprise_linux_8:log4j-web"
        },
        "product_reference": "log4j-web",
        "relates_to_product_reference": "red_hat_enterprise_linux_8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "log4j-jcl as a component of Red Hat Enterprise Linux 9",
          "product_id": "red_hat_enterprise_linux_9:log4j-jcl"
        },
        "product_reference": "log4j-jcl",
        "relates_to_product_reference": "red_hat_enterprise_linux_9"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "log4j-slf4j as a component of Red Hat Enterprise Linux 9",
          "product_id": "red_hat_enterprise_linux_9:log4j-slf4j"
        },
        "product_reference": "log4j-slf4j",
        "relates_to_product_reference": "red_hat_enterprise_linux_9"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "log4j.src as a component of Red Hat Enterprise Linux 9",
          "product_id": "red_hat_enterprise_linux_9:log4j.src"
        },
        "product_reference": "log4j.src",
        "relates_to_product_reference": "red_hat_enterprise_linux_9"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "log4j-1.2-api as a component of Red Hat Fuse 7",
          "product_id": "red_hat_fuse_7:log4j-1.2-api"
        },
        "product_reference": "log4j-1.2-api",
        "relates_to_product_reference": "red_hat_fuse_7"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "log4j-1.2-api as a component of Red Hat JBoss Enterprise Application Platform 7",
          "product_id": "red_hat_jboss_enterprise_application_platform_7:log4j-1.2-api"
        },
        "product_reference": "log4j-1.2-api",
        "relates_to_product_reference": "red_hat_jboss_enterprise_application_platform_7"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "log4j-1.2-api as a component of Red Hat JBoss Enterprise Application Platform 8",
          "product_id": "red_hat_jboss_enterprise_application_platform_8:log4j-1.2-api"
        },
        "product_reference": "log4j-1.2-api",
        "relates_to_product_reference": "red_hat_jboss_enterprise_application_platform_8"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "log4j-1.2-api as a component of Red Hat JBoss Enterprise Application Platform Expansion Pack",
          "product_id": "red_hat_jboss_enterprise_application_platform_expansion_pack:log4j-1.2-api"
        },
        "product_reference": "log4j-1.2-api",
        "relates_to_product_reference": "red_hat_jboss_enterprise_application_platform_expansion_pack"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "redhat-user-workloads/rhokp-core-encrypted as a component of Red Hat Offline Knowledge Portal",
          "product_id": "red_hat_offline_knowledge_portal:redhat-user-workloads/rhokp-core-encrypted"
        },
        "product_reference": "redhat-user-workloads/rhokp-core-encrypted",
        "relates_to_product_reference": "red_hat_offline_knowledge_portal"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rhoai/odh-modelmesh-rhel8 as a component of Red Hat OpenShift AI (RHOAI)",
          "product_id": "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel8"
        },
        "product_reference": "rhoai/odh-modelmesh-rhel8",
        "relates_to_product_reference": "red_hat_openshift_ai_(rhoai)"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "rhoai/odh-modelmesh-rhel9 as a component of Red Hat OpenShift AI (RHOAI)",
          "product_id": "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel9"
        },
        "product_reference": "rhoai/odh-modelmesh-rhel9",
        "relates_to_product_reference": "red_hat_openshift_ai_(rhoai)"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "log4j-1.2-api as a component of streams for Apache Kafka 3",
          "product_id": "streams_for_apache_kafka_3:log4j-1.2-api"
        },
        "product_reference": "log4j-1.2-api",
        "relates_to_product_reference": "streams_for_apache_kafka_3"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-34479",
      "cwe": {
        "id": "CWE-91",
        "name": "XML Injection (aka Blind XPath Injection)"
      },
      "discovery_date": "2026-04-10T16:01:11.900823+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2457313"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Apache Log4j 1-to-Log4j 2 bridge. The Log4j1XmlLayout component fails to properly escape characters forbidden by the XML 1.0 standard. This improper handling of characters results in malformed XML output, which can cause downstream log processing systems to drop or fail to index affected records. The primary consequence is a denial of service for log analysis, potentially hindering security monitoring and incident response.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "org.apache.logging.log4j/log4j-1.2-api: Apache Log4j 1-to-Log4j 2 bridge: Log processing denial of service due to improper XML escaping",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Offline Knowledge Portal 1.2.6:registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:b26253f0a6c6b9e8c8458ecb07e79e9f87ff313491fffc31e342e32bce0a2b3e_arm64",
          "Red Hat Offline Knowledge Portal 1.2.6:registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:ec8b14b7a170b689a19cee7820888e81ddc3affc2faada6cc6139644f328bd36_amd64"
        ],
        "known_affected": [
          "red_hat_data_grid_8:log4j-1.2-api",
          "red_hat_enterprise_linux_8:log4j",
          "red_hat_enterprise_linux_8:log4j-jcl",
          "red_hat_enterprise_linux_8:log4j-slf4j",
          "red_hat_enterprise_linux_8:log4j-web",
          "red_hat_enterprise_linux_9:log4j-jcl",
          "red_hat_enterprise_linux_9:log4j-slf4j",
          "red_hat_enterprise_linux_9:log4j.src",
          "red_hat_fuse_7:log4j-1.2-api",
          "red_hat_jboss_enterprise_application_platform_7:log4j-1.2-api",
          "red_hat_jboss_enterprise_application_platform_8:log4j-1.2-api",
          "red_hat_jboss_enterprise_application_platform_expansion_pack:log4j-1.2-api",
          "red_hat_offline_knowledge_portal:redhat-user-workloads/rhokp-core-encrypted",
          "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel8",
          "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel9",
          "streams_for_apache_kafka_3:log4j-1.2-api"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-34479"
        },
        {
          "category": "external",
          "summary": "RHBZ#2457313",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2457313"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-34479",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-34479"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-34479",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34479"
        },
        {
          "category": "external",
          "summary": "https://github.com/apache/logging-log4j2/pull/4078",
          "url": "https://github.com/apache/logging-log4j2/pull/4078"
        },
        {
          "category": "external",
          "summary": "https://lists.apache.org/thread/gd0hp6mj17rn3kj279vgy4p7kd4zz5on",
          "url": "https://lists.apache.org/thread/gd0hp6mj17rn3kj279vgy4p7kd4zz5on"
        },
        {
          "category": "external",
          "summary": "https://logging.apache.org/cyclonedx/vdr.xml",
          "url": "https://logging.apache.org/cyclonedx/vdr.xml"
        },
        {
          "category": "external",
          "summary": "https://logging.apache.org/log4j/2.x/migrate-from-log4j1.html",
          "url": "https://logging.apache.org/log4j/2.x/migrate-from-log4j1.html"
        },
        {
          "category": "external",
          "summary": "https://logging.apache.org/security.html#CVE-2026-34479",
          "url": "https://logging.apache.org/security.html#CVE-2026-34479"
        }
      ],
      "release_date": "2026-04-10T15:41:07.888000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-05-28T22:46:23+00:00",
          "details": "The container image provided by this update can be downloaded from the Red Hat container registry at registry.redhat.io using the \"podman pull\" command.",
          "product_ids": [
            "Red Hat Offline Knowledge Portal 1.2.6:registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:b26253f0a6c6b9e8c8458ecb07e79e9f87ff313491fffc31e342e32bce0a2b3e_arm64",
            "Red Hat Offline Knowledge Portal 1.2.6:registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:ec8b14b7a170b689a19cee7820888e81ddc3affc2faada6cc6139644f328bd36_amd64"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2026:21773"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
            "Red Hat Offline Knowledge Portal 1.2.6:registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:b26253f0a6c6b9e8c8458ecb07e79e9f87ff313491fffc31e342e32bce0a2b3e_arm64",
            "Red Hat Offline Knowledge Portal 1.2.6:registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:ec8b14b7a170b689a19cee7820888e81ddc3affc2faada6cc6139644f328bd36_amd64",
            "red_hat_data_grid_8:log4j-1.2-api",
            "red_hat_enterprise_linux_8:log4j",
            "red_hat_enterprise_linux_8:log4j-jcl",
            "red_hat_enterprise_linux_8:log4j-slf4j",
            "red_hat_enterprise_linux_8:log4j-web",
            "red_hat_enterprise_linux_9:log4j-jcl",
            "red_hat_enterprise_linux_9:log4j-slf4j",
            "red_hat_enterprise_linux_9:log4j.src",
            "red_hat_fuse_7:log4j-1.2-api",
            "red_hat_jboss_enterprise_application_platform_7:log4j-1.2-api",
            "red_hat_jboss_enterprise_application_platform_8:log4j-1.2-api",
            "red_hat_jboss_enterprise_application_platform_expansion_pack:log4j-1.2-api",
            "red_hat_offline_knowledge_portal:redhat-user-workloads/rhokp-core-encrypted",
            "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel8",
            "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel9",
            "streams_for_apache_kafka_3:log4j-1.2-api"
          ]
        },
        {
          "category": "no_fix_planned",
          "details": "Out of support scope",
          "product_ids": [
            "red_hat_enterprise_linux_9:log4j-jcl",
            "red_hat_enterprise_linux_9:log4j-slf4j",
            "red_hat_enterprise_linux_9:log4j.src"
          ]
        },
        {
          "category": "none_available",
          "details": "Fix deferred",
          "product_ids": [
            "red_hat_data_grid_8:log4j-1.2-api",
            "red_hat_enterprise_linux_8:log4j",
            "red_hat_enterprise_linux_8:log4j-jcl",
            "red_hat_enterprise_linux_8:log4j-slf4j",
            "red_hat_enterprise_linux_8:log4j-web",
            "red_hat_fuse_7:log4j-1.2-api",
            "red_hat_jboss_enterprise_application_platform_7:log4j-1.2-api",
            "red_hat_jboss_enterprise_application_platform_8:log4j-1.2-api",
            "red_hat_jboss_enterprise_application_platform_expansion_pack:log4j-1.2-api",
            "red_hat_offline_knowledge_portal:redhat-user-workloads/rhokp-core-encrypted",
            "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel8",
            "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel9",
            "streams_for_apache_kafka_3:log4j-1.2-api"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "Red Hat Offline Knowledge Portal 1.2.6:registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:b26253f0a6c6b9e8c8458ecb07e79e9f87ff313491fffc31e342e32bce0a2b3e_arm64",
            "Red Hat Offline Knowledge Portal 1.2.6:registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:ec8b14b7a170b689a19cee7820888e81ddc3affc2faada6cc6139644f328bd36_amd64",
            "red_hat_data_grid_8:log4j-1.2-api",
            "red_hat_enterprise_linux_8:log4j",
            "red_hat_enterprise_linux_8:log4j-jcl",
            "red_hat_enterprise_linux_8:log4j-slf4j",
            "red_hat_enterprise_linux_8:log4j-web",
            "red_hat_enterprise_linux_9:log4j-jcl",
            "red_hat_enterprise_linux_9:log4j-slf4j",
            "red_hat_enterprise_linux_9:log4j.src",
            "red_hat_fuse_7:log4j-1.2-api",
            "red_hat_jboss_enterprise_application_platform_7:log4j-1.2-api",
            "red_hat_jboss_enterprise_application_platform_8:log4j-1.2-api",
            "red_hat_jboss_enterprise_application_platform_expansion_pack:log4j-1.2-api",
            "red_hat_offline_knowledge_portal:redhat-user-workloads/rhokp-core-encrypted",
            "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel8",
            "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel9",
            "streams_for_apache_kafka_3:log4j-1.2-api"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate",
          "product_ids": [
            "Red Hat Offline Knowledge Portal 1.2.6:registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:b26253f0a6c6b9e8c8458ecb07e79e9f87ff313491fffc31e342e32bce0a2b3e_arm64",
            "Red Hat Offline Knowledge Portal 1.2.6:registry.redhat.io/offline-knowledge-portal/rhokp-rhel9@sha256:ec8b14b7a170b689a19cee7820888e81ddc3affc2faada6cc6139644f328bd36_amd64",
            "red_hat_data_grid_8:log4j-1.2-api",
            "red_hat_enterprise_linux_8:log4j",
            "red_hat_enterprise_linux_8:log4j-jcl",
            "red_hat_enterprise_linux_8:log4j-slf4j",
            "red_hat_enterprise_linux_8:log4j-web",
            "red_hat_enterprise_linux_9:log4j-jcl",
            "red_hat_enterprise_linux_9:log4j-slf4j",
            "red_hat_enterprise_linux_9:log4j.src",
            "red_hat_fuse_7:log4j-1.2-api",
            "red_hat_jboss_enterprise_application_platform_7:log4j-1.2-api",
            "red_hat_jboss_enterprise_application_platform_8:log4j-1.2-api",
            "red_hat_jboss_enterprise_application_platform_expansion_pack:log4j-1.2-api",
            "red_hat_offline_knowledge_portal:redhat-user-workloads/rhokp-core-encrypted",
            "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel8",
            "red_hat_openshift_ai_(rhoai):rhoai/odh-modelmesh-rhel9",
            "streams_for_apache_kafka_3:log4j-1.2-api"
          ]
        }
      ],
      "title": "org.apache.logging.log4j/log4j-1.2-api: Apache Log4j 1-to-Log4j 2 bridge: Log processing denial of service due to improper XML escaping"
    }
  ]
}