Security Advisory
CVE-2026-16266
4
MEDIUM
Vulnerability Description
Versions of the package mongo-object before 3.0.3 are vulnerable to Prototype Pollution via the expandKey() function in util.js. An attacker can modify the JavaScript prototype chain by supplying a crafted property path containing special keys such as __proto__.
Published Date
July 21, 2026
Official Source
NIST NVD Advisory