CVE-2026-28379

Viewer-triggered race condition in Grafana Live leads to complete server crash

State: Published
Severity: 6.5 Medium
Published: May 13, 2026
Updated: Aug 27, 2026
Reserved: Feb 27, 2026

Description

A race condition in Grafana Live allows authenticated users with Viewer role to trigger a server crash by sending concurrent requests that cause a fatal map access error. This results in complete service unavailability requiring restart of the Grafana server.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	GRAFANA

Weaknesses

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Affected Products

Product	Versions
Grafana OSSGrafana	8.2.0 through 11.6.14Affected 11.6.14 to before 11.6.14+security-04Affected 12.0.0 through 12.2.8Affected 12.2.8 to before 12.2.8+security-04Affected 12.3.0 through 12.3.6Affected 12.3.6 to before 12.3.6+security-04Affected 12.4.0 through 12.4.3Affected 12.4.3 to before 12.4.3+security-02Affected 13.0.0 through 13.0.1Affected 13.0.1 to before 13.0.1+security-01Affected

References

https://grafana.com/security/security-advisories/cve-2026-28379vendor-advisory

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