GitHub Advisoryadvisory · Go

GHSA-3w66-95m3-8jxg Grafana: Pre-authentication denial of service in the public dashboard query handler

HIGH Published 2026-06-22 Modified 2026-09-21 Official page ↗
Aliases
CVE-2026-42127
Ecosystem
Go
Packages
github.com/grafana/grafana
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-400, CWE-770
Reviewed
2026-09-21

Affected packages

• Go github.com/grafana/grafana: < 11.6.15 (no fix yet) • Go github.com/grafana/grafana: < 12.2.9 (no fix yet) • Go github.com/grafana/grafana: < 12.3.7 (no fix yet) • Go github.com/grafana/grafana: < 12.4.4 (no fix yet) • Go github.com/grafana/grafana: < 13.0.2 (no fix yet) • Go github.com/grafana/grafana: < 1.9.2-0.20260616075434-82ef13993059 → fixed in 1.9.2-0.20260616075434-82ef13993059

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.

Related

Alias · CVE (1)

  • CVE-2026-42127 The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger… vulnerability

Weakness · CWE (2)

  • CWE-400 Uncontrolled Resource Consumption weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling weakness

References