What is GHSA-xcrm-48rh-35pj?

GHSA-xcrm-48rh-35pj is a security advisory published by GitHub Security Advisories with Medium severity. The alertmanager templates test endpoint (/api/alertmanager/grafana/config/api/v1/templates/test)...

Which CVE IDs does GHSA-xcrm-48rh-35pj cover?

GHSA-xcrm-48rh-35pj covers the following CVE IDs: CVE-2026-21723. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-xcrm-48rh-35pj?

GHSA-xcrm-48rh-35pj has a CVSS v3 base score of 5.3, published by GitHub Security Advisories.

GHSA-xcrm-48rh-35pjMediumCVSS 5.3

The alertmanager templates test endpoint (/api/alertmanager/grafana/config/api/v1/templates/test)...

Vendor

GitHub Security Advisories

Published

July 23, 2026

Last Modified

July 23, 2026

🔗 CVE IDs covered (1)

CVE-2026-21723 →

📋 Description

The alertmanager templates test endpoint (/api/alertmanager/grafana/config/api/v1/templates/test) can execute templates with no memory limits. Mass-executing templates in a short period causes OOM and crashes the Grafana service. The endpoint requires very low privileges and is exploitable with anonymous access enabled.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-21723
https://grafana.com/security/security-advisories/cve-2026-21723
https://github.com/advisories/GHSA-xcrm-48rh-35pj