In short
- CVE-2025-12390 is a MEDIUM (CVSS 6.0) vulnerability affecting org.keycloak:keycloak-services.
- Chance of exploitation in the next 30 days (EPSS): 0.14%, higher than 3.4% of all vulnerabilities.
- Fix: update to 26.0.0 or later.
Description
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.
NVD description
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.
More vulnerabilities in org.keycloak:keycloak-services
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