En resumen
- CVE-2026-37979 es una vulnerabilidad MEDIO (CVSS 6.5) que afecta a org.keycloak:keycloak-services, build of keycloak (redhat).
- Probabilidad de explotación en los próximos 30 días (EPSS): 0.37%, mayor que el 30.4% de las vulnerabilidades.
- Solución: actualizar a 26.6.2, 26.4.12 o posterior.
Description
A flaw was found in Keycloak. This access control vulnerability in Keycloak's OpenID Connect (OIDC) token introspection endpoint allows a confidential client to bypass audience restrictions. An attacker-controlled client with valid credentials can retrieve sensitive token claims intended for other resource servers, compromising the confidentiality of lightweight access tokens. This issue can be exploited remotely by any confidential client in the realm with valid credentials.
NVD description
A flaw was found in Keycloak. This access control vulnerability in Keycloak's OpenID Connect (OIDC) token introspection endpoint allows a confidential client to bypass audience restrictions. An attacker-controlled client with valid credentials can retrieve sensitive token claims intended for other resource servers, compromising the confidentiality of lightweight access tokens. This issue can be exploited remotely by any confidential client in the realm with valid credentials.
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