Vulnerability in Automattic Mongoose
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 ope…
EPSS: 0.000 (14.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Automattic Mongoose — versions < 6.13.9, >= 7.0.0, <= 7.8.8, >= 8.0.0, <= 8.22.0
- Mongoosejs Mongoose
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-42334?
- CVE-2026-42334 is a high-severity vulnerability in Automattic Mongoose, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.5/10. Published 2026-05-14.
- How severe is CVE-2026-42334?
- High severity. CVSS v3 base score is 7.5 out of 10.