PatchTheCVECVE-2021-23363: This affects the package kill-by-port before 0.0.2
CVE-2021-23363 is a medium-severity flaw (CVSS 6.3) affecting kill-by-port. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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.
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 1.8% (top 22%) |
| CISA exploited list | No |
| Weakness | CWE-78 |
| Published | 2021-03-30 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-23363?
kill-by-port: upgrade to 0.0.2. Exact commands for each OS are on this page.
Is CVE-2021-23363 being exploited?
CVE-2021-23363 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-23363 affect?
CVE-2021-23363 affects kill-by-port. Severity is medium (CVSS 6.3). 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
How urgent is CVE-2021-23363?
Priority 47/100. Public exploit reference