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CVE-2025-12390

Fixed in a distro release EPSS <1%CVSS 6.0

A flaw was found in Keycloak. In Keycloak where a user can accidentally get access to another user's session if both use the same device and browser. This happens because Keycloak sometimes reuses session identifiers and doesn’t clean up properly during logout when browser cookies are missing. As a result, one user may receive tokens that belong to another user.

Published 2025-10-28 · CVE record · OSV

Products: keycloak, Red Hat build of Keycloak 26.2, Red Hat build of Keycloak 26.2.11, Red Hat build of Keycloak 26.4, Red Hat build of Keycloak 26.4.4

Fixed upstream

EcosystemPackageFixed in
Mavenorg.keycloak:keycloak-services26.0.0

Distro releases

ReleasePackageFixed in
Chainguardkeycloak-26.226.2.5-r6
Chainguardkeycloak-26.2-compat26.2.5-r6
Chainguardkeycloak-26.2-iamguarded-compat26.2.5-r6
Chainguardkeycloak-26.326.3.5-r3
Chainguardkeycloak-26.3-compat26.3.5-r3
Chainguardkeycloak-26.3-iamguarded-compat26.3.5-r3
Chainguardkeycloak-26.426.4.4-r0
Chainguardkeycloak-26.4-compat26.4.2-r2
Chainguardkeycloak-26.4-iamguarded-compat26.4.5-r0
Chainguardkeycloak-26.4-operator26.4.2-r2
Chainguardkeycloak-26.4-operator-compat26.4.2-r2
Chainguardkeycloak-fips-26.226.2.5-r8
Chainguardkeycloak-fips-26.2-iamguarded-fips26.2.5-r8
Chainguardkeycloak-fips-26.326.3.5-r4
Chainguardkeycloak-fips-26.3-iamguarded-fips26.3.5-r4
Chainguardkeycloak-fips-26.3-operator26.3.5-r4
Chainguardkeycloak-fips-26.3-operator-compat26.3.5-r4
Chainguardkeycloak-fips-26.426.4.4-r0
Chainguardkeycloak-fips-26.4-iamguarded-fips26.4.4-r0
Chainguardkeycloak-fips-26.4-operator26.4.4-r0
Chainguardkeycloak-fips-26.4-operator-compat26.4.4-r1
Wolfikeycloak-26.326.3.5-r3
Wolfikeycloak-26.3-compat26.3.5-r3
Wolfikeycloak-26.3-iamguarded-compat26.3.5-r3
Wolfikeycloak-26.426.4.4-r0
Wolfikeycloak-26.4-compat26.4.2-r2
Wolfikeycloak-26.4-iamguarded-compat26.4.5-r0
Wolfikeycloak-26.4-operator26.4.2-r2
Wolfikeycloak-26.4-operator-compat26.4.2-r2