CVE-2021-23359: Port-Killer Project Port-Killer

High severity, CVSS 8.8. EPSS: 1.7% chance of exploitation in the next 30 days.

This affects all versions of package port-killer. If (attacker-controlled) user input is given, it is possible for an attacker to execute arbitrary commands. This is due to use of the child_process exec function without input sanitization. Running this PoC will cause the command touch success to be executed, leading to the creation of a file called success.

Affected products

• Port-Killer Project Port-Killer: any version

Published 2021-03-18. Last modified 2026-06-17.