CVE-2026-33374

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 v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://grafana.com/security/security-advisories/cve-2026-33374

Configurations

No configuration.

History

13 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-13 18:17

Updated : 2026-10-16 20:02

NVD link : CVE-2026-33374

Mitre link : CVE-2026-33374

CVE.ORG link : CVE-2026-33374

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-770

Allocation of Resources Without Limits or Throttling

CWE-789

Memory Allocation with Excessive Size Value

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