Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mongoosejs | Mongoose | < 6.13.9 |
Related Weaknesses (CWE)
References
- https://github.com/Automattic/mongoose/security/advisories/GHSA-wpg9-53fq-2r8hMitigationVendor Advisory
FAQ
What is CVE-2026-42334?
CVE-2026-42334 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 ...
How severe is CVE-2026-42334?
CVE-2026-42334 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-42334?
Check the references section above for vendor advisories and patch information. Affected products include: Mongoosejs Mongoose.