CVE-2026-8336

After invoking $_internalJsEmit, which is not intended to be directly accessible, or mapreduce command’s map function in a certain way, an authenticated user can subsequently crash mongod when the server-side JavaScript engine (through $where, $function, mapreduce reduce stage, etc.) is used also in a specific way, resulting in a post-authentication denial-of-service. This issue impacts MongoDB Server v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://jira.mongodb.org/browse/SERVER-121610	Issue Tracking Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mongodb:mongodb::::::::
	cpe:2.3:a:mongodb:mongodb::::::::

History

26 Oct 2026, 18:10

Type	Values Removed	Values Added
Summary		(es) Después de invocar $_internalJsEmit, que no está destinado a ser directamente accesible, o la función map del comando mapreduce de cierta manera, un usuario autenticado puede posteriormente colapsar mongod cuando el motor JavaScript del lado del servidor (a través de $where, $function, la etapa reduce de mapreduce, etc.) se utiliza también de una manera específica, lo que resulta en una denegación de servicio post-autenticación. Este problema afecta a las versiones v8.2 de MongoDB Server anteriores a la 8.2.9 y a las versiones v8.3 anteriores a la 8.3.2.

Information

Published : 2026-05-13 04:17

Updated : 2026-10-26 18:10

NVD link : CVE-2026-8336

Mitre link : CVE-2026-8336

CVE.ORG link : CVE-2026-8336

JSON object : View

Products Affected

mongodb

mongodb

CWE

CWE-416

Use After Free

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