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  4. CVE 2026 82311 apache airflow fab provider fab password reset
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Back to active CVEs
Critical · CVSS 9.8CVE-2026-82311

Apache Airflow FAB provider: FAB password reset never invalidates sessions: string/int _user_id comparison is always falseCVE-2026-82311

Answer in brief

CVE-2026-82311 records a Critical severity (CVSS 9.8) vulnerability in Apache Airflow FAB provider: FAB password reset never invalidates sessions: string/int _user_id comparison is always false. The current sources do not mark it as known exploited. The current feed maps Apache Software Foundation/Apache Airflow FAB provider (generic), Apache Software Foundation/apache-airflow-providers-fab (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 16, 2026Updated Sep 18, 2026Source checked Oct 31, 2026First seen by HOL Sep 16, 2026Material review Sep 18, 2026
Upstream Advisory

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-613
Source
CVE List V5
Source checked
Oct 31, 2026
References
4 linked sources
Open source record

Key facts

Risk
Critical · CVSS 9.8
Exploitation
Not marked as known exploited
Affected software
3 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 9.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Apache Software Foundation/Apache Airflow FAB provider (generic), Apache Software Foundation/apache-airflow-providers-fab (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
ProductAffected versionsFixed versions
cpe:2.3:a:apache:apache-airflow-providers-fab:*:*:*:*:*:*:*:*Not reportedNot reported
Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Apache Software Foundation/Apache Airflow FAB providergeneric>=2.4.2 <3.9.03.9.0
Apache Software Foundation/apache-airflow-providers-fabgeneric>=2.4.2 <3.9.03.9.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Apache Software Foundation/Apache Airflow FAB provider, Apache Software Foundation/apache-airflow-providers-fab.
  2. 2Review the reported fix. Update Apache Software Foundation/Apache Airflow FAB provider to 3.9.0; Apache Software Foundation/apache-airflow-providers-fab to 3.9.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 16, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 18, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Sep 16, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencelists.apache.org
  • Source referencelists.apache.org
  • Source referencecve.org
Upstream source description

Apache 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.

Quoted source text, attributed separately from HOL analysis.