What’s Vulnerable › Vulnerabilities

CVE-2021-23360: Arbitrary Command Injection

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-03-21 · updated 2026-06-17
• Weakness: CWE-78

Description

This affects the package killport before 1.0.2. 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

• killport: before 1.0.2 — fixed in 1.0.2

How to fix

Upgrade to a fixed version: killport 1.0.2. Check the vendor advisory for mitigations.

References

• https://github.com/ssnau/killport/blob/5268f23ea8f152e47182b263d8f7ef20c12a9f28/index.js%23L9
• https://github.com/ssnau/killport/commit/bec8e371f170a12e11cd222ffc7a6e1ae9942638
• https://snyk.io/vuln/SNYK-JS-KILLPORT-1078535
• https://github.com/ssnau/killport/blob/5268f23ea8f152e47182b263d8f7ef20c12a9f28/index.js%23L9
• https://github.com/ssnau/killport/commit/bec8e371f170a12e11cd222ffc7a6e1ae9942638
• https://snyk.io/vuln/SNYK-JS-KILLPORT-1078535

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