CVE-2026-42127
Grafana pre-auth DoS through arbitrarily large input to public dashboard query handler
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.
INFO
Published Date :
June 22, 2026, 4:31 p.m.
Last Modified :
June 22, 2026, 4:31 p.m.
Remotely Exploit :
No
Source :
GRAFANA
Affected Products
The following products are affected by CVE-2026-42127
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Implement request body size limits for the query endpoint.
- Validate and sanitize all incoming JSON payloads.
- Monitor memory usage under load conditions.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-42127 vulnerability anywhere in the article.