CVE-2026-11933CWE-787

Post-authentication use-after-free in server-side JavaScript BSON-to-array conversion

High · published June 12, 2026

CVSS v4.0
8.7
EPSS
0%
Percentile
31.2
In the wild
Unconfirmed
What it is

A use-after-free vulnerability exists in MongoDB Server's server-side JavaScript engine when converting BSON documents to JavaScript arrays. An authenticated user with read privileges who is able to run server-side JavaScript (for example, via $where or $function) can cause the server to access memory that has already been freed. This may result in disclosure of information from the mongod process memory or a denial of service through a server crash.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00384 · 31.2th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-06-12T01:57Z
EPSS history
Timeline
  • 12 JUN 01:57Z
    Post-authentication use-after-free in server-side JavaScript BSON-to-array conversion
    cvelistv5