CVE-2023-40185: Shescape Project Shescape

High severity, CVSS 8.6. EPSS: 0.7% chance of exploitation in the next 30 days.

shescape is simple shell escape library for JavaScript. This may impact users that use Shescape on Windows in a threaded context. The vulnerability can result in Shescape escaping (or quoting) for the wrong shell, thus allowing attackers to bypass protections depending on the combination of expected and used shell. This bug has been patched in version 1.7.4.

Affected products

Published 2023-08-23. Last modified 2026-06-17.