What is CVE-2026-28383?

CVE-2026-28383 is a medium-severity vulnerability in Grafana, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-05-13.

How severe is CVE-2026-28383?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Grafana

CVE-2026-28383

A request to the Grafana plugin resources endpoint can cause unbounded memory allocation by reading the entire request body into memory. An authenticated user can exploit this to trigger an out-of-memory condition, potentially causing a de…

EPSS: 0.000 (2.8th percentile) — read the EPSS interpretation.

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.

Affected products

Grafana — versions 11.6.14, 12.2.8, 12.3.6
Grafana Oss — versions 6.7.0, 11.6.14, 12.0.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

security@grafana.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-28383?: CVE-2026-28383 is a medium-severity vulnerability in Grafana, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-05-13.
How severe is CVE-2026-28383?: Medium severity. CVSS v3 base score is 6.5 out of 10.