cve-2026-55568

{
  "document": {
    "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-2026-55568.json"
      }
    ],
    "title": "guzzlehttp/guzzle: Guzzle: Information disclosure via cleartext proxy communication",
    "tracking": {
      "current_release_date": "2026-06-28T07:14:34+00:00",
      "generator": {
        "date": "2026-06-28T07:14:34+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "5.2.6"
        }
      },
      "id": "CVE-2026-55568",
      "initial_release_date": "2026-06-23T14:54:23.655000+00:00",
      "revision_history": [
        {
          "date": "2026-06-23T14:54:23.655000+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-06-23T19:53:34.835548+00:00",
          "number": "2",
          "summary": "Current version"
        },
        {
          "date": "2026-06-28T07:14:34+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "category": "vendor",
        "name": "Red Hat",
        "product": {
          "name": "All currently supported Red Hat products",
          "product_id": "red_hat_products",
          "product_identification_helper": {
            "cpe": "cpe:/a:redhat"
          }
        }
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-55568",
      "discovery_date": "2026-06-23T16:01:00.717836+00:00",
      "flags": [
        {
          "label": "vulnerable_code_not_present",
          "product_ids": [
            "red_hat_products"
          ]
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Guzzle, an extensible PHP HTTP client. In certain configurations, when an application uses Guzzle's built-in cURL handlers with an HTTPS proxy and an older version of libcurl (prior to 7.50.2), traffic intended to be protected by TLS is transmitted in cleartext. This can lead to the disclosure of sensitive information, such as proxy authentication credentials and the target host and port for tunneled HTTPS requests, to an unencrypted proxy. A remote attacker could exploit this to intercept sensitive data.",
          "title": "Vulnerability description"
        },
        {
          "category": "other",
          "text": "Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.",
          "title": "Statement"
        },
        {
          "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": {
        "known_not_affected": [
          "red_hat_products"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-55568"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-55568",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-55568"
        }
      ],
      "release_date": "2026-06-23T14:54:23.655000+00:00",
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "red_hat_products"
          ]
        }
      ],
      "title": "guzzlehttp/guzzle: Guzzle: Information disclosure via cleartext proxy communication"
    }
  ]
}