CVE-2026-82311 Apache Airflow FAB provider - Authentication Bypass

Apache Airflow FAB provider before 3.9.0 contains a broken authentication caused by inconsistent session identifier comparison in database-backed sessions, letting attackers with stolen session cookies maintain access after password reset, exploit requires use of FAB auth manager with database session backend.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.98% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
16 September 2026
Updated
15 October 2026
Weakness
CWE-613

Vendor fix

Upgrade to apache-airflow-providers-fab version 3.9.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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