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THREAT OPS › Threat News › [NVD] CVE-2026-16100 (MEDIUM 6.5) — 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,

[NVD] CVE-2026-16100 (MEDIUM 6.5) — 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,

mednvdPublished 2026-08-05

CVE-2026-16100 CVSS: 6.5 MEDIUM Published: 2026-08-05T15:16:37.573

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

Indicators of compromise

CVE-2026-16100cve

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-16100