{"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-2026-44024.json"}],"title":"fluentd: Fluentd: Remote Code Execution via arbitrary file write due to insufficient tag validation","tracking":{"current_release_date":"2026-07-13T16:20:42+00:00","generator":{"date":"2026-07-13T16:20:42+00:00","engine":{"name":"Red Hat SDEngine","version":"5.3.2"}},"id":"CVE-2026-44024","initial_release_date":"2026-07-08T21:20:29.598000+00:00","revision_history":[{"date":"2026-07-08T21:20:29.598000+00:00","number":"1","summary":"Initial version"},{"date":"2026-07-13T16:17:21+00:00","number":"2","summary":"Current version"},{"date":"2026-07-13T16:20:42+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-2026-44024","discovery_date":"2026-07-08T22:01:21.063167+00:00","flags":[{"label":"vulnerable_code_not_present","product_ids":["red_hat_products"]}],"notes":[{"category":"description","text":"A flaw was found in Fluentd, a data collector. This vulnerability allows a remote attacker to achieve arbitrary file write and potentially remote code execution by sending untrusted tags containing path traversal characters. The issue arises from insufficient validation of the ${tag} placeholder in file configurations, such as the path parameter of the out_file plugin. Successful exploitation could lead to a full system compromise without authentication, depending on the Fluentd configuration and its process privileges.","title":"Vulnerability description"},{"category":"other","text":"Red Hat has determined that no Red Hat product is currently affected by this vulnerability. Exploitation requires a Fluentd deployment configured with an output plugin, such as out_file, that constructs file paths dynamically from the ${tag} placeholder, combined with the ability for an attacker to submit untrusted, attacker-influenced tags to that Fluentd instance (for example, via an exposed forward or HTTP input). Deployments that do not accept externally influenced tags, or that do not use tag-based dynamic path construction in output plugin configuration, are not exposed to this issue in practice. Red Hat has completed a portfolio-wide search for Fluentd across Red Hat product offerings (strict and substring dependency search) and found no currently supported Red Hat product that ships the vulnerable code path.","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-2026-44024"},{"category":"external","summary":"https://www.cve.org/CVERecord?id=CVE-2026-44024","url":"https://www.cve.org/CVERecord?id=CVE-2026-44024"},{"category":"external","summary":"https://nvd.nist.gov/vuln/detail/CVE-2026-44024","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44024"},{"category":"external","summary":"https://github.com/fluent/fluentd/commit/45c87a81f3ac0b72b3f9dcfe8cfb5f9038f81437","url":"https://github.com/fluent/fluentd/commit/45c87a81f3ac0b72b3f9dcfe8cfb5f9038f81437"},{"category":"external","summary":"https://github.com/fluent/fluentd/pull/5391","url":"https://github.com/fluent/fluentd/pull/5391"},{"category":"external","summary":"https://github.com/fluent/fluentd/releases/tag/v1.19.3","url":"https://github.com/fluent/fluentd/releases/tag/v1.19.3"},{"category":"external","summary":"https://github.com/fluent/fluentd/security/advisories/GHSA-44hj-4m45-frj3","url":"https://github.com/fluent/fluentd/security/advisories/GHSA-44hj-4m45-frj3"}],"release_date":"2026-07-08T21:20:29.598000+00:00","scores":[{"cvss_v3":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"products":["red_hat_products"]}],"title":"fluentd: Fluentd: Remote Code Execution via arbitrary file write due to insufficient tag validation"}]}