Apache Airflow FAB provider: FAB Admin password PATCH does not invalidate database-backed sessions
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-613.
Summary
Apache Airflow FAB provider: changing a user's password through the Admin user-edit PATCH endpoint does not invalidate that user's existing database-backed sessions. An attacker who already holds a copy of the victim's session cookie keeps full access as that user after the password change, so the password reset does not evict them. Affects deployments using the FAB auth manager with database-backed sessions; an administrator (or the user themselves) performing a routine password change is the trigger, and no attacker interaction with the endpoint is needed. This is a second, independent route to the outcome addressed by CVE-2026-82311, which corrected an identifier comparison in the session-invalidation helper. That fix does not repair this endpoint, because the PATCH path never calls the helper at all. Deployments that applied the CVE-2026-82311 fix must also upgrade for this one. Users of apache-airflow-providers-fab are recommended to upgrade to version 3.9.0 or later, which fixes the issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Apache Airflow FAB provider (Apache Software Foundation) Fixed in 3.9.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apache Airflow FAB provider 3.9.0
4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2026-56769 Insufficient session expiration in Apache Airflow FAB providerPriority MEDIUM 51
- TI-2026-59164 Apache Airflow FAB provider: FAB Authentik provider: id_token issuer/audience not validatedPriority LOW 37
- TI-2026-56768 Apache Airflow FAB provider: FAB auth manager: deactivated users retain and renew Core API JWT accessPriority LOW 36
Timeline
- 2026-10-02 Threatist record created from CVE-2026-86462
- 2026-10-03 Alias added: GHSA-5j5v-7fmw-4hvh
References
More Apache-airflow-providers-fab vulnerabilities
- TI-2026-56769 Insufficient session expiration in Apache Airflow FAB provider CVSS 3.1CRITICAL 9.8
- TI-2024-28416 Apache Airflow Providers FAB: FAB provider 1.2.1 and 1.2.0 did not let user to logout for Airflow CVSS 3.1CRITICAL 9.8
- TI-2026-42383 Improper signature verification in Apache Airflow FAB provider CVSS 3.1CRITICAL 9.8
- TI-2026-52804 Origin validation error in Apache Airflow FAB provider CVSS 3.1CRITICAL 9.1
- TI-2024-30146 Apache Airflow Fab Provider: Application does not invalidate session after password change via Airflow cli CVSS 3.1HIGH 8.1
- TI-2026-42385 Improper privilege management in Apache Airflow FAB provider CVSS 3.1HIGH 8.1
Sources
- CVE-2026-86462 · CVE Program
- CVE-2026-86462 · NVD
- FIRST EPSS
- GHSA-5j5v-7fmw-4hvh · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences