CVE-2026-86462

Apache Airflow FAB provider: FAB Admin password PATCH does not invalidate database-backed sessions

State: Published
Severity: 9.1 Critical
Published: Sep 16, 2026
Updated: Sep 17, 2026
Reserved: Sep 7, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	CISA-ADP

Weaknesses

CWE-613 Insufficient Session Expiration

Affected Products

Product	Versions
Apache Airflow FAB providerApache Software Foundation	3.2.0 to before 3.9.0Affected

References

https://github.com/apache/airflow/pull/72657patch
https://lists.apache.org/thread/7sr4sggfv5fhhl3qgphcq0rlhg81do1s?users@airflow.apache.orgvendor-advisory
https://www.cve.org/CVERecord?id=CVE-2026-82311related
https://lists.apache.org/thread/7sr4sggfv5fhhl3qgphcq0rlhg81do1svendor-advisory

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