CVE-2026-8202CWE-770

Post-authentication CPU utilization DoS via $trim/$ltrim/$rtrim operators

Medium · published May 13, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
38.2
In the wild
Unconfirmed
What it is

Using a densely populated chars mask and a large input string in the MongoDB aggregation operators $trim, $ltrim, and $rtrim, an authenticated user with aggregation permissions can pin CPU utilization at 100% for an extended period of time.

This issue impacts MongoDB Server v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
EPSS
0.00451 · 38.2th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-05-13T00:19Z
EPSS history
Timeline
  • 13 MAY 00:19Z
    Post-authentication CPU utilization DoS via $trim/$ltrim/$rtrim operators
    cvelistv5