CVE-2026-97176

Keycloak-services: keycloak-services: essential acr requirement silently bypassed via cookie authenticator

State
Published
Severity
4.2 Medium
Published
Sep 24, 2026
Updated
Sep 26, 2026
Reserved
Sep 24, 2026

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Description

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.

Scores

CVSSScoreVectorSource
3.14.2 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:Nredhat

Weaknesses

Affected Products

ProductVersions
Red Hat Build of KeycloakRed Hat
    Red Hat Build of KeycloakRed Hat
      Red Hat Single Sign-On 7Red Hat

        References

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