CVE-2026-9747CWE-617

Crafted cross-shard merge aggregation crashes MongoDB Server

High · published June 9, 2026

CVSS v4.0
7.1
EPSS
0%
Percentile
39.8
In the wild
Unconfirmed
What it is

Adding fromRouter:true and runtimeConstants.userRoles could cause aggregations to crash mongodb server.

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
0.00472 · 39.8th percentile
Weakness
CWE-617 · Reachable Assertion
Published
2026-06-09T22:05Z
EPSS history
Timeline
  • 09 JUN 22:05Z
    Crafted cross-shard merge aggregation crashes MongoDB Server
    cvelistv5