CVE-2026-33374
Unbounded memory allocation in the Prometheus rule conversion API
MEDIUM
6.5
CVSS Score
Published: October 13, 2026 at 05:05 PM UTC
Updated: October 16, 2026 at 08:02 PM UTC
1 product affected across 1 vendorGrafana
Using Grafana Enterprise by Grafana?
Get instant alerts when new vulnerabilities affect Grafana Enterprise - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit
Description
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
6.5MEDIUMGRAFANA
Vector?
Quick Info
StatusAWAITING ANALYSIS
CWE
CWE-770CWE-400CWE-789
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card