Detections
Analytics

MongoDB 4.4.x < 4.4.31 / 5.0.x < 5.0.34 / 6.0.x < 6.0.29 / 7.0.x < 7.0.37 / 8.0.x < 8.0.26 / 8.2.x < 8.2.11 / 8.3.x < 8.3.4 Use-After-Free (CVE-2026-11933)

high Nessus Plugin ID 321186

Synopsis

The remote host is missing a security update.

Description

The version of MongoDB installed on the remote host is 4.4.x prior to 4.4.31, 5.0.x prior to 5.0.34, 6.0.x prior to 6.0.29, 7.0.x prior to 7.0.37, 8.0.x prior to 8.0.26, 8.2.x prior to 8.2.11, or 8.3.x prior to 8.3.4. It is, therefore, affected by a use-after-free vulnerability:

 - A use-after-free vulnerability exists in the 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 (via $where or $function) can cause the server to access memory that has already been freed, potentially resulting in disclosure of information or denial of service. (CVE-2026-11933)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to MongoDB version 4.4.31 / 5.0.34 / 6.0.29 / 7.0.37 / 8.0.26 / 8.2.11 / 8.3.4 or later.

See Also

https://jira.mongodb.org/browse/SERVER-128125

Plugin Details

Severity: High

ID: 321186

File Name: mongodb_server_SERVER-128125.nasl

Version: 1.1

Type: Combined

Agent: windows, macosx, unix

Family: Databases

Published: 6/16/2026

Updated: 6/16/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-11933

CVSS v3

Risk Factor: High

Base Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v4

Risk Factor: High

Base Score: 8.7

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

Vulnerability Information

CPE: cpe:/a:mongodb:mongodb

Required KB Items: installed_sw/MongoDB

Patch Publication Date: 6/12/2026

Vulnerability Publication Date: 6/12/2026

Reference Information

CVE: CVE-2026-11933