Vulnerability in Red Hat Build of Keycloak

[ Description ]Official description

A flaw was found in the Conditional OTP authenticator of Keycloak, an identity and access management solution. The issue occurs when the system evaluates specific HTTP headers to determine if a one-time password (OTP) should be skipped, but fails to verify if those headers came from a trusted source. This could allow an attacker who already has a user's password to bypass the second-factor authentication by providing a specially crafted header in their request.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund23 Sep 2026WID-SEC-2026-3558

  Keycloak: Multiple vulnerabilities Translated from German

  CVE-2026-97176CVE-2026-96445CVE-2026-97177+1 more CVEs

[ References ]References

• access.redhat.com/security/cve/CVE-2026-96445
• bugzilla.redhat.com/show_bug.cgi