{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-82355", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-08-28T17:48:57.836Z", "datePublished": "2026-09-21T14:32:04.932Z", "dateUpdated": "2026-09-21T14:32:04.932Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-09-21T14:32:04.932Z"}, "title": "Apache Airflow: Session cookie silently overrides explicit Authorization bearer header, enabling session fixation", "problemTypes": [{"descriptions": [{"description": "CWE-384: Session Fixation", "lang": "en", "cweId": "CWE-384", "type": "CWE"}]}], "source": {"discovery": "UNKNOWN"}, "affected": [{"vendor": "Apache Software Foundation", "product": "Apache Airflow", "packageURL": "pkg:pypi/apache-airflow", "versions": [{"status": "affected", "version": "3.3.0", "lessThan": "3.3.2", "versionType": "semver"}], "defaultStatus": "unaffected", "collectionURL": "https://pypi.python.org", "packageName": "apache-airflow"}], "descriptions": [{"value": "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 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.", "lang": "en", "supportingMedia": [{"type": "text/html", "base64": false, "value": "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 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.<br><br>Only 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.<br><br>Exploiting 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.<br><br>Users 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."}]}], "references": [{"url": "https://github.com/apache/airflow/pull/72225", "tags": ["patch"]}, {"url": "https://github.com/apache/airflow/pull/72723", "tags": ["patch"]}, {"url": "https://lists.apache.org/thread/3p7zpdvv40tn01m0xk5mt2rxg88mw8w1", "tags": ["vendor-advisory"]}], "metrics": [{"other": {"type": "Textual description of severity", "content": {"text": "low"}}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "credits": [{"lang": "en", "value": "Claude Security Scans", "type": "tool"}, {"lang": "en", "value": "Jarek Potiuk", "type": "remediation developer"}], "x_generator": {"engine": "airflow-s/generate_cve_json.py"}}}}

{}

{}

{}

{}