PatchTheCVECVE-2026-76186: Apache Airflow Keycloak provider: from Airflow 3.3 the Keycloak auth manager takes a user's identity from the
CVE-2026-76186 is a critical-severity flaw (CVSS 9.1) affecting apache-airflow-providers-keycloak. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Apache Airflow Keycloak provider: from Airflow 3.3 the Keycloak auth manager takes a user's identity from the signed Airflow session token but takes the Keycloak access and refresh tokens used for every authorization decision from separate, unauthenticated cookies, and never checks that the two describe the same subject. A user who holds any valid Airflow login of their own, together with another subject's Keycloak access or refresh token obtaine
Why this priority
- Critical severity
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
- On your watchlist
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.1 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.8% (top 43%) |
| CISA exploited list | No |
| Weakness | CWE-565 |
| Published | 2026-09-16 |
| Last modified | 2026-09-18 |
Last updated 2026-09-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-76186?
apache-airflow-providers-keycloak: upgrade to 0.10.0. Exact commands for each OS are on this page.
Is CVE-2026-76186 being exploited?
CVE-2026-76186 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-76186 affect?
CVE-2026-76186 affects apache-airflow-providers-keycloak. Severity is critical (CVSS 9.1). Apache Airflow Keycloak provider: from Airflow 3.3 the Keycloak auth manager takes a user's identity from the signed Airflow session token but takes the Keycloak access and refresh tokens used for every authorization decision from separate,
How urgent is CVE-2026-76186?
Priority 59/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist
Software pages
Keycloak vulnerabilities · Apache Airflow vulnerabilities
Related CVEs
- CVE-2026-40948 MEDIUM 5.4 UPGRADE The Keycloak authentication manager in `apache-airflow-providers-keycloak` did not generate or validate the OA
- CVE-2026-76187 CRITICAL 9.8 UPGRADE Apache Airflow Keycloak provider: the unauthenticated token endpoint accepts a client-credentials grant for an