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Vulnerabilities CVE-2026-42334

CVE-2026-42334

High
Open
TLP:CLEAR

Mongoose: Improper Sanitization of $nor in sanitizeFilter May Allow NoSQL Injection

NVD CVE.org
Critical Infrastructure

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Description

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.

Details

CVSS Score
7.5
EPSS Score
0.27%

19.6th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Confidence
90%
Published
May 14, 2026
Last Modified
May 14, 2026
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