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.
PUBLISHED5.2
Grafana pre-auth DoS through arbitrarily large input to public dashboard query handler
Affected products
Grafana
Grafana Enterprise
<= 11.6.14 - AFFECTED
<= 12.2.8 - AFFECTED
<= 12.3.6 - AFFECTED
<= 12.4.3 - AFFECTED
<= 13.0.1 - AFFECTED
Grafana OSS
<= 11.6.14 - AFFECTED
<= 12.2.8 - AFFECTED
<= 12.3.6 - AFFECTED
<= 12.4.3 - AFFECTED
<= 13.0.1 - AFFECTED
References
GitHub Security Advisories
GHSA-3w66-95m3-8jxg
The public dashboard query endpoint does not limit request body size before processing, allowing...
https://github.com/advisories/GHSA-3w66-95m3-8jxgThe 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.
JSON source
https://cveawg.mitre.org/api/cve/CVE-2026-42127Click to expand
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