CVE-2026-16266
Prototype Pollution via expandKey in mongo-object
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__.
CVSS 4.0 · 6.3 Medium
EPSS < 1%
KEV · Not listed
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