Session Fixation Affecting org.keycloak:keycloak-services package, versions [,26.0.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-ORGKEYCLOAK-13743318
- published30 Oct 2025
- disclosed28 Oct 2025
- creditUnknown
Introduced: 28 Oct 2025
NewCVE-2025-12390 (opens in a new tab)How to fix?
Upgrade org.keycloak:keycloak-services to version 26.0.0 or higher.
Overview
org.keycloak:keycloak-services is an open source identity and access management solution for modern applications and services.
Affected versions of this package are vulnerable to Session Fixation in the backchannel logout when browser cookies are missing. An attacker using the same browser on the same device can gain unauthorized access to another user's session by reusing authentication session identifiers when browser cookies are missing and session cleanup is not properly performed.