{"id":"CVE-2026-82355","title":"When a request to the Airflow core API carries both a session cookie and an explicit `Authorization: Bearer` token, Airflow resolves the caller from the cookie and ignores the bearer token, inverting the intended precedence of bearer ove…","summary":"When a request to the Airflow core API carries both a session cookie and an explicit `Authorization: Bearer` token, Airflow resolves the caller from the cookie and ignores the bearer token, inverting the intended precedence of bearer ove…","severity":"medium","cvss":4.2,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","cwe":["CWE-384"],"vendor":"Apache Software Foundation","product":"apache-airflow","affected":["apache-airflow >= 3.3.0 < 3.3.2"],"published":"2026-09-21","updated":"2026-09-21","sourceUpdated":"2026-09-21T19:17:12.793","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-82355","references":[{"url":"https://github.com/apache/airflow/pull/72225","label":"security@apache.org"},{"url":"https://github.com/apache/airflow/pull/72723","label":"security@apache.org"},{"url":"https://lists.apache.org/thread/3p7zpdvv40tn01m0xk5mt2rxg88mw8w1","label":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/09/21/4","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-21T15:23:48.747705Z"},"ingestedAt":"2026-09-21T14:38:56.366Z","slug":"CVE-2026-82355","body":"## Overview\n\nWhen a request to the Airflow core API carries both a session cookie and an explicit `Authorization: Bearer` token, Airflow resolves the caller from the cookie and ignores the bearer token, inverting the intended precedence of bearer over cookie. The request then executes -- and is recorded in the audit log -- as the cookie's principal rather than the identity the client explicitly presented.\n\nOnly Apache Airflow 3.3.0 and 3.3.1 are affected. Earlier releases do not contain the code path that caches the cookie-derived user, and are not vulnerable.\n\nExploiting this requires an attacker to first place a valid session cookie of their own into the victim's browser or client: for example by cookie tossing from a sibling subdomain, through cross-site scripting in a separate application sharing a parent domain, or via a shared workstation. Deployments that host the Airflow UI on a domain shared with other applications are therefore the most exposed; a deployment on a dedicated domain with no co-hosted applications is not reachable this way. The consequence is principal confusion and misattributed audit records rather than a direct privilege escalation.\n\nUsers of 3.3.0 or 3.3.1 should upgrade to Apache Airflow 3.3.2 or later, which resolves the caller from the explicitly supplied credential whenever one is present.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":23,"depthScoreParts":{"impact":23.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":208549,"id":"CVE-2026-82355","ts":1790008114410,"field":"cvss","old":null,"new":"4.2"},{"seq":208548,"id":"CVE-2026-82355","ts":1790008114410,"field":"severity","old":"none","new":"medium"}]}