Apache Airflow FAB provider: FAB password reset never invalidates sessions: string/int _user_id comparison is always false

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-82311
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-16 09:17:06 UTC
Updated2026-09-16 09:17:06 UTC
DescriptionApache Airflow FAB provider: resetting a user's password does not delete that user's existing database-backed sessions, despite documented behaviour that it does. The cleanup compares the string identifier Flask-Login stores in the session against the user's integer database identifier, so the comparison never matches and no session is removed. An attacker who already holds a copy of the victim's session cookie keeps access as that user after the password change, so the reset does not evict them. Affects deployments using the FAB auth manager with `[fab] session_backend=database`. The trigger is an administrator (or the user) running the supported password-reset command as a containment action after a session cookie has been compromised; the secure-cookie backend is out of scope, as it documents that it cannot centrally delete sessions. apache-airflow-providers-fab 3.9.0 also fixes CVE-2026-86462, a second, independent route to the same outcome via the Admin user-edit endpoint; a single upgrade closes both. Users of apache-airflow-providers-fab are recommended to upgrade to version 3.9.0 or later, which compares the identifiers consistently.

Risk And Classification

Problem Types: CWE-613 | CWE-613 CWE-613: Insufficient Session Expiration

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apache Software Foundation Apache Airflow FAB Provider affected 2.4.2 3.9.0 semver Not specified

References

ReferenceSourceLinkTags
github.com/apache/airflow/pull/72198 [email protected] github.com
lists.apache.org/thread/mmplwl93shy615shkpp9p4fzyjvr4yqw [email protected] lists.apache.org
www.cve.org/CVERecord [email protected] www.cve.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Mayank Jangid (OpenSec) (en)

CNA: Jarek Potiuk (en)

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