CVE-2026-8199CWE-1325

Post-auth memory exhaustion via bitwise match expressions

High · published May 13, 2026

CVSS v4.0
7.1
EPSS
0%
Percentile
38.2
In the wild
Unconfirmed
What it is

An authenticated user can cause excess memory usage via bitwise match expression AST processing of $bitsAllSet, $bitsAnySet, $bitsAllClear, and $bitsAnyClear. This contributes to memory pressure and may lead to availability loss by OOM.

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
7.1 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00451 · 38.2th percentile
Weakness
CWE-1325 · Improperly Controlled Sequential Memory Allocation
Published
2026-05-13T00:05Z
EPSS history
Timeline
  • 13 MAY 00:05Z
    Post-auth memory exhaustion via bitwise match expressions
    cvelistv5