Arbitrary code execution in kill-by-port

HIGH 8.8CVE-2021-23363 · GHSA-mm4f-47ch-f7hx · SNYK-JS-KILLBYPORT-1078531 · Published 30/03/2021 · updated 17/06/2026

In short

CVE-2021-23363 is a HIGH (CVSS 8.8) vulnerability affecting kill-by-port (kill-by-port project), kill-by-port.
Chance of exploitation in the next 30 days (EPSS): 1.8%, higher than 78.2% of all vulnerabilities.
Fix: update to 0.0.2 or later.

Package	Affected versions	Patched versions
kill-by-port kill-by-port_project	`< 0.0.2`	`0.0.2`
kill-by-port npm	`< 0.0.2`	`0.0.2`

Description

This affects the package kill-by-port before 0.0.2. If (attacker-controlled) user input is given to the killByPort function, it is possible for an attacker to execute arbitrary commands. This is due to use of the child_process exec function without input sanitization.

NVD description

References

nvd.nist.gov/vuln/detail/CVE-2021-23363 · ADVISORY
GuyMograbi/kill-by-port commit ea5b1f3 · WEB
GuyMograbi/kill-by-port · PACKAGE
GuyMograbi/kill-by-port · WEB
snyk.io/vuln/SNYK-JS-KILLBYPORT-1078531 · WEB
GuyMograbi/kill-by-port · Broken Link

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