What is CVE-2026-8922?

CVE-2026-8922 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under Incorrect Implementation of Authentication Algorithm. CVSS score: 5.4/10. Published 2026-05-19.

How severe is CVE-2026-8922?

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

Vulnerability in Red Hat Build Of Keycloak

CVE-2026-8922

A flaw was found in Keycloak. When both realm-level and client-level `notBefore` revocation policies are configured, Keycloak's OpenID Connect (OIDC) Introspection feature fails to properly honor the realm-level policy. This allows tokens…

EPSS: 0.000 (1.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Weakness classification (CWE)

CWE-303 — Incorrect Implementation of Authentication Algorithm

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry, Vendor Advisory)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2026-8922?: CVE-2026-8922 is a medium-severity vulnerability in Red Hat Build Of Keycloak, classified under Incorrect Implementation of Authentication Algorithm. CVSS score: 5.4/10. Published 2026-05-19.
How severe is CVE-2026-8922?: Medium severity. CVSS v3 base score is 5.4 out of 10.