Review reviewHigh

CVE-2026-33382

Grafana Grafana OSS, grafana

Several Grafana API endpoints, some of them unauthenticated, do not limit the size of the request body before processing it. An attacker can send very large payloads that force excessive memory allocation, potentially exhausting memory and causing a denial of service.

CVSS
7.5
EPSS
0.39%
31.6% percentile
CISA KEV
Not listed
Published
2026.07.11
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.39%
Technical severityCVSS 7.5

Vulnerability overview

Several Grafana API endpoints, some of them unauthenticated, do not limit the size of the request body before processing it. An attacker can send very large payloads that force excessive memory allocation, potentially exhausting memory and causing a denial of service.

Affected product and versions

Product
Grafana Grafana OSS, grafana
Affected versions
>= 11.6.0 <= 11.6.14, >= 12.2.0 <= 12.2.8, >= 12.3.0 <= 12.3.6, >= 12.4.0 <= 12.4.3, >= 13.0.0 <= 13.0.1, >= 11.6.0 < 11.6.15, >= 12.2.0 < 12.2.9, >= 12.3.0 < 12.3.7, >= 12.4.0 < 12.4.4, >= 13.0.0 < 13.0.2
Fixed versions
11.6.15, 12.2.9, 12.3.7, 12.4.4, 13.0.2

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Grafana Grafana OSS, grafana and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
CWE-400