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

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.0027, the 20th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 1 May 2026, 20:59 UTC Published by the maintainers as a GitHub repository advisory

Sources

• GitHub Advisory Database: GHSA-wpg9-53fq-2r8h
• OSV: GHSA-wpg9-53fq-2r8h
• github.com/Automattic/mongoose/security/advisories/GHSA-wpg9-53fq-2r8h
• nvd.nist.gov/vuln/detail/CVE-2026-42334
• github.com/Automattic/mongoose
• mongoosejs.com/docs/api/mongoose.html#Mongoose.prototype.sanitizeFilter()
• thecodebarbarian.com/whats-new-in-mongoose-6-sanitizefilter.html

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.