CVE-2026-33374mediumCWE-400CWE-770CWE-789

CVE-2026-33374: medium-severity vulnerability in Grafana Enterprise

Unbounded memory allocation in the Prometheus rule conversion API

Published

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.5epss 0.4%
The Prometheus rule conversion API endpoints in Grafana do not limit request body size, allowing authenticated users to trigger unbounded memory allocations that can crash the server through out-of-memory conditions.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products
Grafana · Grafana EnterpriseGrafana · Grafana OSS
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