SB2026072434 - Resource exhaustion in Grafana
Published: July 24, 2026
Security Bulletin ID
SB2026072434
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Resource exhaustion (CVE-ID: CVE-2026-21723)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in the alertmanager templates test endpoint when executing templates without memory limits. A remote user can send a large number of template execution requests to cause a denial of service.
Anonymous access must be enabled for unauthenticated exploitation.
Remediation
Install update from vendor's website.