Description
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.
Published: 2026-06-12
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 12 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Fri, 12 Jun 2026 03:45:00 +0000

Type Values Removed Values Added
First Time appeared Mongodb
Mongodb mongodb
Vendors & Products Mongodb
Mongodb mongodb

Fri, 12 Jun 2026 02:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Post-authentication use-after-free in server-side JavaScript BSON-to-array conversion
Weaknesses CWE-787
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'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'}

Subscriptions

Mongodb Mongodb
cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-06-13T03:55:46.393Z

Reserved: 2026-06-10T18:54:51.125Z

Link: CVE-2026-11933

cve-icon Vulnrichment

Updated: 2026-06-12T13:28:39.655Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-12T02:16:38.527

Modified: 2026-06-12T16:06:17.027

Link: CVE-2026-11933

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-12T03:30:12Z

Weaknesses