CVE-2026-86462 Apache Airflow FAB provider: FAB Admin password PATCH does not invalidate database-backed sessions
Attackers with stolen session cookies retain access after password changes because the FAB Admin PATCH endpoint fails to invalidate database-backed sessions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-86462?
CVE-2026-86462 is a critical vulnerability in Apache Airflow FAB provider, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-613
Which versions are affected by CVE-2026-86462?
It affects 1 product.
Products include Apache Apache-Airflow-Providers-Fab.
How do I fix CVE-2026-86462?
Upgrade to a fixed version.
Is CVE-2026-86462 being exploited?
There is no known exploitation of CVE-2026-86462 in the wild and no public exploit code.
Other vulnerabilities in Apache Airflow FAB provider
- CVE-2026-82311 Security feature bypass in Apache Airflow FAB provider
- CVE-2026-59243 Auth bypass in Apache Airflow FAB provider
- CVE-2024-42447 Apache Airflow Providers FAB: FAB provider 1.2.1 and 1.2.0 did not let user to logout for Airflow
- CVE-2026-75156 Auth bypass in Apache Airflow FAB provider
- CVE-2026-86466 Apache Airflow FAB provider: FAB Authentik provider: id_token issuer/audience not validated
Sources
Also known as CLEANSTART-2026-QU51579, GHSA-5j5v-7fmw-4hvh.