CVE-2026-42127 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Vendors	Products
Grafana	Grafana Grafana Enterprise

No data.

No data.

References

Link	Providers
https://grafana.com/security/security-advisories/cve-2026-42127

History

Wed, 24 Jun 2026 16:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Grafana Grafana grafana Grafana grafana Enterprise
Vendors & Products		Grafana Grafana grafana Grafana grafana Enterprise

Mon, 22 Jun 2026 21:15:00 +0000

Type	Values Removed	Values Added
Weaknesses	CWE-400

Mon, 22 Jun 2026 19:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-770
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Mon, 22 Jun 2026 18:45:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-400

Mon, 22 Jun 2026 17:30:00 +0000

Type	Values Removed	Values Added
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.
Title		Grafana pre-auth DoS through arbitrarily large input to public dashboard query handler
References		https://grafana.com/security/security-advisories/cve-2026-42127
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}`

MITRE

Status: PUBLISHED

Assigner: GRAFANA

Published: 2026-06-22T16:31:28.096Z

Updated: 2026-06-22T17:28:35.835Z

Reserved: 2026-04-24T15:38:08.066Z

Link: CVE-2026-42127

Vulnrichment

Updated: 2026-06-22T17:28:30.549Z

NVD

No data.

Redhat

No data.

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