Review reviewHigh

CVE-2026-42127

Grafana Grafana Enterprise, Grafana OSS, grafana

The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger excessive memory allocation by sending arbitrarily large JSON payloads. This can lead to denial of service through memory exhaustion. No valid dashboard access token or authentication is required to exploit this vulnerability.

CVSS: 7.5
EPSS: 0.43%
CISA KEV: Not listed
Published: 2026.06.23

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.43%

Technical severityCVSS 7.5

Vulnerability overview

Affected product and versions

Product: Grafana Grafana Enterprise, Grafana OSS, grafana
Affected versions: 11.6.0, 12.2.0, 12.3.0, 12.4.0, 13.0.0, <= 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
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that Grafana Grafana Enterprise, Grafana OSS, grafana and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
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, CWE-770