#VU122160 Resource management error in Grafana - CVE-2026-21720

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Main Vulnerability Database Vulnerabilities #VU122160

#VU122160 Resource management error in Grafana - CVE-2026-21720

Published: January 30, 2026


Vulnerability identifier: #VU122160
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-21720
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Grafana
Software vendor:
Grafana Labs

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources within the application when caching avatars from the Gravatar service API. If such a request times out after 3 seconds a Goroutine is left running consuming system resources.


Remediation

Install updates from vendor's website.

External links