CVE-2026-79651

Name of the Vulnerable Software and Affected Versions Keycloak (affected versions not specified)

Description A flaw exists in the theme localization endpoints of the keycloak-services component, which manages authentication flows and themes. The system accepts arbitrary locale tags from unauthenticated requests and stores them in a permanent in-memory cache without limits. An attacker can send a large number of unique locale tags to exhaust the server memory, leading to a crash.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.