CVE-2026-97176 — Keycloak-services: keycloak-services: essential acr requirement silently bypassed via cookie authenticator
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 requir…
Published: 2026-09-24 · CVSS: 4.2 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7