CVE-2026-16100
🔶 mediumSummary
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 Score
6.5
Medium
EPSS Score
0.3
Exploit Probability
Published Date
2026-08-05
First Seen: 2026-08-06
📊 Relative Risk Intelligence
This CVE is Lower Risk - more severe than 46.8% of all 348,756 vulnerabilities in our database.
#185,493
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: Aug 5, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
🏆 Discovered By
Red Hat would like to thank Paul Bottinelli (Trail of Bits) for reporting this issue.
SSVC data provided by
CISA
Last Modified
2026-08-10
Source
NVD 🔗
CVSS Vector 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE IDs (Weakness Types)