CVE-2026-16631Public exploit

Local command execution via interpolated destination path

Published Jul 22, 2026 · Updated Jul 22, 2026

OS command injection in @publint/pack 0.1.0 through 0.1.4 allows local users to execute arbitrary commands via a crafted destination path. The pack function interpolates its destination option into a shell command string passed to child_process.exec, causing shell metacharacters and command substitutions to be evaluated. Exploitation requires a local caller or consuming application to supply an attacker-controlled destination, and commands run with the Node.js process's privileges.

CVSS severity5.3
Medium
EPSS probability0.64%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in @publint/pack 0.1.0 through 0.1.4 allows local users to execute arbitrary commands via a crafted destination path. The pack function interpolates its destination option into a shell command string passed to child_process.exec, causing shell metacharacters and command substitutions to be evaluated. Exploitation requires a local caller or consuming application to supply an attacker-controlled destination, and commands run with the Node.js process's privileges.

The record

CVE
CVE-2026-16631
Published
Jul 22, 2026
Updated
Jul 22, 2026
Vendor
publint
Product
publint
Classifications
CWE-78, CWE-77, T1059.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.1.0
  2. Affected versionversion=0.1.1
  3. Affected versionversion=0.1.2
  4. Affected versionversion=0.1.3
  5. Affected versionversion=0.1.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

publint · publintversion=0.1.0; version=0.1.1; version=0.1.2; version=0.1.3; version=0.1.4

Published CVSS scores

4.3VulDBAV:L/AC:L/Au:S/C:P/I:P/A:P
5.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
1.9VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059.004Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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