Log in Start free

Vulnerability · Published Jun 22, 2026 · Assigned by GRAFANA

CVE-2026-42127Pre-authentication denial of service in the public dashboard query endpoint

High 7.5

In plain English

A high-severity uncontrolled resource consumption in Grafana Enterprise from Grafana. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 62.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10grafana10.2.6-28.el10_2.4ALSA-2026:54178
AlmaLinux:8grafana9.2.10-32.el8_10.1ALSA-2026:54243
AlmaLinux:9grafana10.2.6-23.el9_8.1ALSA-2026:54184
AlmaLinux:10grafana-selinux10.2.6-28.el10_2.4ALSA-2026:54178
AlmaLinux:8grafana-selinux9.2.10-32.el8_10.1ALSA-2026:54243
AlmaLinux:9grafana-selinux10.2.6-23.el9_8.1ALSA-2026:54184
Alpine:v3.24grafana12.4.4-r0ALPINE-CVE-2026-42127
Gogithub.com/grafana/grafanano fix listedGO-2026-6541
Gogithub.com/grafana/grafanano fix listedGO-2026-6541
Gogithub.com/grafana/grafanano fix listedGO-2026-6541
Gogithub.com/grafana/grafanano fix listedGHSA-3w66-95m3-8jxg
Gogithub.com/grafana/grafanano fix listedGHSA-3w66-95m3-8jxg
Gogithub.com/grafana/grafanano fix listedGHSA-3w66-95m3-8jxg
Gogithub.com/grafana/grafanano fix listedGHSA-3w66-95m3-8jxg
Gogithub.com/grafana/grafanano fix listedGHSA-3w66-95m3-8jxg
Gogithub.com/grafana/grafana1.9.2-0.20260616075434-82ef13993059GHSA-3w66-95m3-8jxg
Gogithub.com/grafana/grafanano fix listedGO-2026-6541
Gogithub.com/grafana/grafanano fix listedGO-2026-6541
Gogithub.com/grafana/grafanano fix listedGO-2026-6541
Rocky Linux:8grafana0:9.2.10-32.el8_10.1RLSA-2026:54243
Rocky Linux:9grafana0:10.2.6-23.el9_8.1RLSA-2026:54184

Affected products (as reported)

VendorProductVersions
Grafana Grafana Enterprise 11.6.0 – through 11.6.1412.2.0 – through 12.2.812.3.0 – through 12.3.612.4.0 – through 12.4.313.0.0 – through 13.0.1
Grafana Grafana OSS 11.6.0 – through 11.6.1412.2.0 – through 12.2.812.3.0 – through 12.3.612.4.0 – through 12.4.313.0.0 – through 13.0.1

Weakness: CWE-400, CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References