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VulnerabilityPublished Updated

CVE-2026-82311: Apache Airflow FAB provider · Insufficient Session Expiration

Affects Apache Airflow FAB providerSource CVE Database V5

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Mentioned vulnerabilities

Not known to be exploited · CVSS 9.8 Critical : upgrade to 3.9.0 as a priority.

Data as of 31 Oct 2026, 08:20 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.9% chance of exploitation in 30 days – higher than 62% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.9.0
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.

What to do

Upgrade Apache Airflow FAB provider to 3.9.0.

Affected software

ProductAffectedFixed in
Apache Software FoundationApache Airflow FAB providerAffected
  • >=2.4.2 <3.9.0
Fixed in
  • 3.9.0
PyPIapache-airflow-providers-fabpkg:pypi/apache-airflow-providers-fabOther threatsAffected
  • =3.9.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users should upgrade to apache-airflow-providers-fab version 3.9.0 or later, which fixes the session cleanup logic to properly invalidate existing database-backed sessions upon password reset. No other mitigation is necessary as the fix fully addresses the issue.

Description

CVE-2026-82311 is a critical vulnerability in the Apache Airflow FAB provider affecting deployments using the FAB auth manager with database-backed session storage. When a user's password is reset, existing sessions are not properly deleted due to a mismatch in identifier comparison, allowing an attacker with a stolen session cookie to maintain access even after the password change. This issue is fixed in version 3.9.0, which corrects the identifier comparison logic. The vulnerability has a CVSS score of 9.8, indicating high severity.

References

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