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Fencer Vulns
medium 6.3

CVE-2021-23348 json

Arbitrary Command Injection

published 2021-03-31 5 y ago modified 2026-09-10 1 mo ago also GHSA-vm67-7vmg-66vm , EUVD-2021-0881

cvss
6.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 78%
public exploits
0
none known

Summary

This affects the package portprocesses before 1.0.5. If (attacker-controlled) user input is given to the killProcess 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.

Patch / fix

  • npm portprocesses 1.0.5
  • n/a portprocesses 1.0.5

Exploit prediction

1.82% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • snyk.io https://snyk.io/vuln/SNYK-JS-PORTPROCESSES-1078536 referenced PoC, tagged "exploit" by a source, unverified
  • github.com https://github.com/rrainn/PortProcesses/security/advisories/GHSA-vm67-7vmg-66vm referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P
CNA 3.1 6.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P
GitHub 3.1 6.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
npm portprocesses
<1.0.5
1.0.5

Affected products

  • n/a portprocesses

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command
  • CWE-77 Improper Neutralization of Special Elements used in a Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.