high7.5
CVE-2026-42127
The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger excessive memory allocati…
Impact
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
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/grafana/grafana | >= 2.0.0-beta1, < 11.6.15 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Grafana | Grafana | through 11.6.14 from 12.2.0 through 12.2.8 from 12.3.0 through 12.3.6 from 12.4.0 through 12.4.3 from 13.0.0 through 13.0.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-3w66-95m3-8jxg
- https://nvd.nist.gov/vuln/detail/CVE-2026-42127
- https://grafana.com/security/security-advisories/cve-2026-42127
- https://github.com/grafana/grafana/pull/125789
- https://github.com/grafana/grafana/commit/82ef13993059351bf21de35b8488bbd9b42df4f4
- https://github.com/grafana/grafana/releases/tag/v11.6.15
- https://github.com/grafana/grafana/releases/tag/v12.2.9
- https://github.com/grafana/grafana/releases/tag/v12.3.7
- https://github.com/grafana/grafana/releases/tag/v12.4.4
- https://github.com/grafana/grafana/releases/tag/v13.0.2