CVE-2026-28383

Grafana plugin resources can lead to unbounded memory allocation

Published May 13, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
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 denial of service.

Analysis

AI-generated

Technical impact

A request to the Grafana plugin resources endpoint can cause unbounded memory allocation by reading the entire request body into memory. An authenticated user may exploit this to trigger an out‑of‑memory condition, potentially leading to a denial of service on the affected system. The vulnerability allows an authenticated user to deliberately consume all available memory, causing the Grafana process to terminate or become unresponsive.

Affected Systems

The affected product is Grafana OSS. No specific version range is provided in the advisory, so the issue may affect all versions of the open‑source Grafana platform until a patch is applied.

Risk and Exploitability

The CVSS score of 6.5 places this issue in the medium severity range. The EPSS score is < 1%, indicating a very low probability of exploitation, and the vulnerability is not listed in CISA's KEV catalog. Based on the description, it is inferred that the likely attack vector is network‑based, requiring an authenticated user to send a large request to the plugin resources endpoint. Exploitation requires only that the attacker has valid credentials to the Grafana deployment; no privilege escalation or additional system access is required.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest vendor patch for Grafana OSS when it becomes available.
  • Configure Grafana or the front‑end reverse proxy to limit the maximum size of request bodies sent to the plugin resources endpoint, thereby preventing unchecked memory growth.
  • Enable monitoring and alerting for sudden increases in memory usage by the Grafana process, and consider implementing rate‑limiting for API requests to reduce the impact of a potential denial of service.

Generated by OpenCVE AI on May 14, 2026 at 16:27 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:11.6.14:-:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:11.6.14:security01:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:12.2.8:-:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:12.2.8:security01:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:12.3.6:-:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:12.3.6:security01:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:12.4.3:-:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:13.0.0:*:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:13.0.1:-:*:*:*:*:*:*
Type Values Removed Values Added
Weaknesses CWE-221
Type Values Removed Values Added
First Time appeared Grafana
Grafana grafana
Vendors & Products Grafana
Grafana grafana
Type Values Removed Values Added
Weaknesses CWE-770
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-221
Type Values Removed Values Added
Description 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 denial of service.
Title Grafana plugin resources can lead to unbounded memory allocation
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

Weaknesses
  • CWE-770

    Allocation of Resources Without Limits or Throttling

Sources

Status
PUBLISHED
Assigner
GRAFANA
Published
Updated
Aug 27, 2026, 5:22 PM
Reserved
Feb 27, 2026, 7:16 AM
Status
Analyzed
Published
May 13, 2026, 8:16 PM
Modified
Oct 26, 2026, 2:10 PM
Severity
Moderate
Public date
May 13, 2026, 7:28 PM