CVE-2026-21729

Loki detected_fields query limits results in unbounded memory allocation

High · published July 16, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
38.9
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00460 · 38.9th percentile
Published
2026-07-16T03:12Z
EPSS history
Timeline
  • 16 JUL 03:12Z
    Loki detected_fields query limits results in unbounded memory allocation
    cvelistv5