CVE-2026-21729

HIGH CVSS 3.1: 7.5 EPSS 0.46%
Updated Aug 26, 2026
Grafana
Parameter Value
CVSS 7.5 (HIGH)
Type CWE-770 (Allocation Without Limits)
Vendor Grafana
Public PoC No

Loki queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products

grafana:loki