What is CVE-2026-40948?

CVE-2026-40948 is a medium-severity vulnerability in Apache Apache-airflow-providers-keycloak, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2026-04-18.

How severe is CVE-2026-40948?

Medium severity. CVSS v3 base score is 5.4 out of 10.

CSRF in Apache Apache-airflow-providers-keycloak

CVE-2026-40948

The Keycloak authentication manager in `apache-airflow-providers-keycloak` did not generate or validate the OAuth 2.0 `state` parameter on the login / login-callback flow, and did not use PKCE. An attacker with a Keycloak account in the sa…

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.000 (7.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.

Affected products

Apache Apache-airflow-providers-keycloak
Apache Software Foundation Airflow Providers Keycloak — versions 0.0.1

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

security@apache.org (Patch, patch, Issue Tracking)
security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-40948?: CVE-2026-40948 is a medium-severity vulnerability in Apache Apache-airflow-providers-keycloak, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2026-04-18.
How severe is CVE-2026-40948?: Medium severity. CVSS v3 base score is 5.4 out of 10.