A flaw was found in the Level of Authentication enforcement mechanism of Keycloak, an identity and access management solution.

A flaw was found in the Level of Authentication enforcement mechanism of Keycloak, an identity and access management solution. The issue occurs when a client specifically requires a higher security level for a user who already has an active session at a lower level. Due to a logic error in how session re-evaluations are handled, Keycloak may incorrectly issue a token at the lower security level instead of enforcing the required higher level, potentially allowing unauthorized access to sensitive resources that rely on these security claims.

CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Severity from

no source yet

Weakness

CWE-862

• www.cve.org/CVERecord?id=CVE-2026-97176
• nvd.nist.gov/vuln/detail/CVE-2026-97176
• access.redhat.com/security/cve/CVE-2026-97176
• bugzilla.redhat.com/show_bug.cgi?id=2539964