CVE-2026-76186 Apache Airflow - Broken Access Control

Apache Airflow 3.3+ with Keycloak auth manager contains a broken access control caused by separate unauthenticated cookies for Keycloak tokens not bound to session identity, letting logged-in users escalate privileges by pairing foreign tokens, exploit requires valid Airflow login and foreign Keycloak tokens.

CVSS base score 9.1 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.81% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Privilege Escalation
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-565

Vendor fix

Upgrade apache-airflow-providers-keycloak to version 0.10.0 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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