CVE-2026-11933 Details
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.
A use-after-free vulnerability has been identified in MongoDB Server versions 8.0.27, 4.4.30, 6.0.28, 8.3.4, 8.2.11, and 7.0.37. This vulnerability arises in the server-side JavaScript engine when converting BSON documents to JavaScript arrays. An authenticated user with read privileges who can execute server-side JavaScript, such as through the $where or $function operators, may exploit this vulnerability. The issue allows the server to access memory that has already been freed, potentially leading to the disclosure of information from the mongod process memory or causing a denial-of-service by crashing the server.
Users can upgrade to MongoDB Server versions 4.4.31, 6.0.29, 5.0.34, 8.3.4, 8.2.11, or 8.0.26 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 12, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://jira.mongodb.org/browse/SERVER-128125 | [email protected] | PatchVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | [email protected] |
| CWE-787 | Out-of-bounds Write | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mongodb mongodb | >= 4.4.0, < 4.4.31 >= 5.0.0, < 5.0.34 >= 6.0.0, < 6.0.29 >= 7.0.0, < 7.0.37 >= 8.0.0, < 8.0.26 >= 8.2.0, < 8.2.11 >= 8.3.0, < 8.3.4 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 22, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 12, 2026 | New CVE Received | [email protected] |