CVE-2026-16100

6.5 MEDIUM

Published 2026-08-05 · Updated 2026-08-10

AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CWE-770

Vendors

redhat

Products

build of keycloak

References

https://access.redhat.com/errata/RHSA-2026:50848 Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:50849 Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-16100 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2501730 Issue Tracking, Vendor Advisory

Data: NVD (public domain). Analysis: local $0 model. Defensive use only.