CVE-2026-86462 Apache Airflow FAB provider - Authentication Bypass

Apache Airflow FAB provider contains a broken authentication caused by failure to invalidate existing database-backed sessions after password change via Admin user-edit PATCH endpoint, letting attackers with existing session cookies maintain access, exploit requires attacker to have victim's session cookie.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.83% 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:N
Published
16 September 2026
Updated
15 October 2026
Weakness
CWE-613

Vendor fix

Upgrade to 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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