CVE-2026-42127 Details
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.
A denial-of-service vulnerability has been identified in Grafana's public dashboard query endpoint. The issue arises because the endpoint does not impose limits on request body size before processing. This oversight allows unauthenticated attackers to send excessively large JSON payloads, leading to excessive memory allocation and memory exhaustion. Notably, no valid dashboard access token or authentication is required to exploit this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 22, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://grafana.com/security/security-advisories/cve-2026-42127 | [email protected] | Broken Link |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-400 | Uncontrolled Resource Consumption | [email protected] |
| CWE-770 | Allocation of Resources Without Limits or Throttling | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| grafana grafana | <= 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 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 10, 2026 | CVE Modified | [email protected] |
| Jun 30, 2026 | Initial Analysis | [email protected] |
| Jun 22, 2026 | CVE Modified | CISA-ADP |
| Jun 22, 2026 | New CVE Received | [email protected] |