Vulnerability in Grafana

CVE-2026-28379

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.

Vulnerability class: Race Condition

Published · last modified .

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (17.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-28379: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

  • Grafana — versions 11.6.14, 12.2.8, 12.3.6
  • Grafana Oss — versions 8.2.0, 11.6.14, 12.0.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-28379?
CVE-2026-28379 is a medium-severity vulnerability in Grafana, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 6.5/10. Published 2026-05-13.
How severe is CVE-2026-28379?
Medium severity. CVSS v3 base score is 6.5 out of 10.