CVE-2026-42334

Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Prior to 6.13.9, 7.8.9, 8.22.1, and 9.1.6, a vulnerability allows bypassing Mongoose’s sanitizeFilter query sanitization mechanism via the $nor operator. When sanitizeFilter is enabled, Mongoose wraps query operators in $eq to neutralize them. However, prior to the fix, $nor was not included in the set of logical operators that are recursively sanitized. Because $nor accepts an array (like $and and $or), and arrays do not trigger hasDollarKeys(), malicious operators such as $ne, $gt, or $regex could be injected inside a $nor clause without being sanitized. This vulnerability is fixed in 6.13.9, 7.8.9, 8.22.1, and 9.1.6.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/Automattic/mongoose/security/advisories/GHSA-wpg9-53fq-2r8h	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mongoosejs:mongoose::::::node.js::*
	cpe:2.3:a:mongoosejs:mongoose::::::node.js::*
	cpe:2.3:a:mongoosejs:mongoose::::::node.js::*
	cpe:2.3:a:mongoosejs:mongoose::::::node.js::*

History

15 May 2026, 18:25

Type	Values Removed	Values Added
CPE		cpe:2.3:a:mongoosejs:mongoose::::::node.js::*
References	~~() https://github.com/Automattic/mongoose/security/advisories/GHSA-wpg9-53fq-2r8h -~~	() https://github.com/Automattic/mongoose/security/advisories/GHSA-wpg9-53fq-2r8h - Mitigation, Vendor Advisory
First Time		Mongoosejs mongoose Mongoosejs

14 May 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-14 18:16

Updated : 2026-05-15 18:25

NVD link : CVE-2026-42334

Mitre link : CVE-2026-42334

CVE.ORG link : CVE-2026-42334

JSON object : View

Products Affected

mongoosejs

mongoose

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

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