Origin Validation Error Affecting org.keycloak:keycloak-services package, versions [,26.7.1)
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JAVA-ORGKEYCLOAK-19006783
- published20 Aug 2026
- disclosed5 Aug 2026
- creditUnknown
Introduced: 5 Aug 2026
NewCVE-2026-16442 (opens in a new tab)How to fix?
Upgrade org.keycloak:keycloak-services to version 26.7.1 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 Origin Validation Error in the IdP-initiated broker endpoint. An attacker who controls a linked upstream SAML identity can send a signed IdP-initiated SSO response to /realms/{realm}/broker/{alias}/endpoint/clients/{client_id} and log in as the associated local user even when that identity provider is configured for account linking only.