{"id":"CVE-2026-16100","published":"2026-08-05T15:16:37.573","lastModified":"2026-08-10T18:17:35.247","description":"A flaw was found in the user-event metrics recording of Keycloak. When metrics are enabled, the system records raw error messages from failed account operations as Prometheus metric labels. Because these error messages can include user-supplied input like nonexistent client IDs, an authenticated user can create a massive number of unique metric entries, eventually exhausting system memory and causing the service to crash or become unavailable.","cvssScore":6.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-770"],"vendors":["redhat"],"products":["build of keycloak"],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:50848","tags":["Vendor Advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:50849","tags":["Vendor Advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-16100","tags":["Vendor Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2501730","tags":["Issue Tracking","Vendor Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":null}