Unbounded memory allocation in the Prometheus rule conversion API (Grafana Grafana Enterprise)

CVE-2026-33374
MEDIUM 6.5

At a glance

Source
NVD
EPSS
EPSS 0.37 % Β· percentile 31 ()
State
PUBLISHED
Published
Updated
Assigner
GRAFANA
NVD status
Awaiting Analysis

Description

The Prometheus rule conversion API endpoints in Grafana do not limit request body size, allowing authenticated users to trigger unbounded memory allocations that can crash the server through out-of-memory conditions.

Weaknesses (CWE)

  • CWE-770 β€” Allocation of Resources Without Limits or Throttling
  • CWE-400 β€” Uncontrolled Resource Consumption
  • CWE-789 β€” Memory Allocation with Excessive Size Value

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HGRAFANA
CVSS 3.1MEDIUM 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD Β· security@grafana.com (Secondary)

European references

Affected products

ProductVersions
Grafana Β· Grafana Enterpriseaffected 12.0.0 ≀ 12.3.11 ; affected 12.4.0 < 12.4.13 ; affected 13.0.0 < 13.0.11 ; affected 13.1.0 < 13.1.8 ; affected 13.2.0 < 13.2.4
Grafana Β· Grafana OSSaffected 12.0.0 ≀ 12.3.11 ; affected 12.4.0 < 12.4.13 ; affected 13.0.0 < 13.0.11 ; affected 13.1.0 < 13.1.8 ; affected 13.2.0 < 13.2.4

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST β€” attribution requested
ENISA EUVDENISA β€” reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain β€” this product uses data from the NVD API but is not endorsed or certified by the NVD