CVE-2023-26139: Underscore-Keypath Project Underscore-Keypath

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

Versions of the package underscore-keypath from 0.0.11 are vulnerable to Prototype Pollution via the name argument of the setProperty() function. Exploiting this vulnerability is possible due to improper input sanitization which allows the usage of arguments like “__proto__”.

Affected products

• Underscore-Keypath Project Underscore-Keypath: from 0.0.11

Published 2023-08-01. Last modified 2026-06-17.