{"id":"CVE-2026-82355","aliases":[],"cve":{"records":[{"id":"CVE-2026-82355","source":"apache","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-08-28T17:48:57.836Z","published":"2026-09-21T14:32:04.932Z","modified":"2026-11-03T07:00:47.198Z"}],"publishers":[{"name":"apache","role":"CNA","organizationId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","modified":"2026-11-03T07:00:47.198Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-09-21T15:26:07.194Z"},{"name":"CVE","role":"ADP","organizationId":"af854a3a-2127-422b-91ae-364da2661108","modified":"2026-09-21T18:09:32.318Z"}],"references":[{"url":"https://github.com/apache/airflow/pull/72225","tags":["patch"],"source":"apache"},{"url":"https://github.com/apache/airflow/pull/72723","tags":["patch"],"source":"apache"},{"url":"https://lists.apache.org/thread/3p7zpdvv40tn01m0xk5mt2rxg88mw8w1","tags":["vendor-advisory"],"source":"apache"},{"url":"http://www.openwall.com/lists/oss-security/2026/09/21/4","tags":[],"source":"CVE"}],"weaknesses":[{"id":"CWE-384","description":"CWE-384: Session Fixation","source":"apache"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-09-21T15:23:48.747705Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Apache Airflow: Session cookie silently overrides explicit Authorization bearer header, enabling session fixation","titleSource":"apache","descriptionSource":"apache","description":"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.","score":4.2,"severity":"medium","published":"2026-09-21T14:32:04.932Z","modified":"2026-11-03T07:00:47.198Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Apache Software Foundation","name":"Apache Airflow","platforms":[],"versions":[{"version":"3.3.0","status":"affected","lessThan":"3.3.2","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:pypi/apache-airflow-core","packageIdentity":{"ecosystem":"PyPI","name":"apache-airflow-core"},"cpes":[],"source":"apache","url":"https://www.cve.org/CVERecord?id=CVE-2026-82355"}],"remediation":[],"references":["https://github.com/apache/airflow/pull/72225","https://github.com/apache/airflow/pull/72723","https://lists.apache.org/thread/3p7zpdvv40tn01m0xk5mt2rxg88mw8w1","http://www.openwall.com/lists/oss-security/2026/09/21/4"],"sources":[{"name":"CVE","id":"CVE-2026-82355","modified":"2026-11-03T07:00:47.198Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-82355"}],"assessments":[{"source":"CISA-ADP","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","score":4.2}],"sourceAffected":[],"observedAt":"2026-11-03T07:15:46.503Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T00:25:34.584Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-03T07:20:33.319Z","attemptedAt":"2026-11-03T07:20:33.319Z"},{"source":"GHSA","status":"available","checkedAt":"2026-11-03T07:20:33.459Z","attemptedAt":"2026-11-03T07:20:33.459Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-03T07:20:32.942Z","attemptedAt":"2026-11-03T07:20:32.942Z"},{"source":"EPSS","status":"available","checkedAt":"2026-11-03T07:20:33.122Z","attemptedAt":"2026-11-03T07:20:33.122Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-83943","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-83943","modified":"Sep 21, 2026, 6:09:32 PM","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","checkedAt":"2026-11-03T07:20:32.942Z"},{"source":"FIRST EPSS","id":"CVE-2026-82355","url":"https://www.first.org/epss/","probability":0.00735,"percentile":0.54443,"date":"2026-11-02","checkedAt":"2026-11-03T07:20:33.122Z"},{"source":"NVD","id":"CVE-2026-82355","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82355","modified":"2026-09-25T19:43:35.010","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","checkedAt":"2026-11-03T07:20:33.319Z"},{"source":"GitHub Advisory Database","id":"GHSA-9x6g-jfj6-r3jg","url":"https://github.com/advisories/GHSA-9x6g-jfj6-r3jg","modified":"2026-09-21T21:31:51Z","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","checkedAt":"2026-11-03T07:20:33.459Z"}],"aiSummary":{"text":"Apache Airflow versions 3.3.0 and 3.3.1 are vulnerable to session fixation, where a session cookie overrides an explicit Authorization bearer header. An attacker with access to a victim's browser or client can exploit this. The impact is principal confusion and misattributed audit records.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-03T07:16:02.979Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-82355"}]}}