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9.1
CVE-2026-86462: Apache Airflow FAB provider password change leaves old sessions active
CVE-2026-86462 · published 9 days ago
Summary
When a password is changed through the admin interface in Apache Airflow's FAB provider, any existing login sessions that use the database for session storage remain valid. This means someone who already has a session cookie can continue to act as that user even after the password is reset. Upgrade the FAB provider to version 3.9.0 or newer to ensure password changes properly end old sessions.
What to do
- Update apache software foundation apache airflow fab provider to version 3.9.0 or later.
- Update apache apache-airflow-providers-fab to version 3.9.0 or later.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| apache software foundation | apache airflow fab provider | < 3.9.0 |
| apache | apache-airflow-providers-fab |
>= 3.2.0, < 3.9.0 cpe:2.3:a:apache:apache-airflow-providers-fab:*:*:*:*:*:*:*:* |
Original advisory text
Apache Airflow FAB provider: FAB Admin password PATCH does not invalidate database-backed sessions
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.
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.
References
- https://github.com/apache/airflow/pull/72657 Patch
- https://lists.apache.org/thread/7sr4sggfv5fhhl3qgphcq0rlhg81do1s Vendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2026-82311 URL
- https://lists.apache.org/thread/[email protected]... Vendor Advisory
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86462... Vendor Advisory
- https://pypi.python.org URL
- https://nvd.nist.gov/vuln/detail/CVE-2026-86462 Vendor Advisory
Severity
9.1
Critical
Exploitation
EPSS <1%
Type
CWE-613Insufficient Session Expiration
Timeline
Published16 Sep 2026
Updated25 Sep 2026
First seen16 Sep 2026
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