CVE-2026-42127
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Grafana
PublishedJun 22, 2026
First seenJun 22, 2026
Weakness typeCWE-400Uncontrolled resource consumption
How to fix
Update
- github.com/grafana/grafana1.9.2-0.20260616075434-82ef13993059 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| grafana grafana | v ≤ 11.6.14, 12.2.0 ≤ v ≤ 12.2.8, 12.3.0 ≤ v ≤ 12.3.6, 12.4.0 ≤ v ≤ 12.4.3, 13.0.0 ≤ v ≤ 13.0.1 | — |
| github.com/grafana/grafanaGo | 2.0.0-beta1 ≤ v, 12.0.0 ≤ v, 12.3.0 ≤ v, 12.4.0 ≤ v, 13.0.0 ≤ v, v < 1.9.2-0.20260616075434-82ef13993059, No range specified, 2.0.0-beta1+incompatible ≤ v | 1.9.2-0.20260616075434-82ef13993059 |
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