---
id: CVE-2026-41451
title: >-
  UAC (Unix-like Artifacts Collector) versions prior to 3.3.0 contain a command
  injection vulnerability in the user substitution logic within
  parse_artifact.sh where usernames and home directories from /etc/passwd are
  substituted directly …
summary: >-
  UAC (Unix-like Artifacts Collector) versions prior to 3.3.0 contain a command
  injection vulnerability in the user substitution logic within
  parse_artifact.sh where usernames and home directories from /etc/passwd are
  substituted directly …
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
published: '2026-08-21'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:43:32.537'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-41451'
references:
  - url: >-
      https://github.com/tclahr/uac/commit/2cc367d8ead388f05abd3cfb8af537788a124e72
    label: disclosure@vulncheck.com
  - url: 'https://github.com/tclahr/uac/pull/443'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/uac-command-injection-via-user-substitution-in-parse-artifact-sh
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.01171
epssPercentile: 0.66093
ingestedAt: '2026-09-24T20:51:40.217Z'
---

## Overview

UAC (Unix-like Artifacts Collector) versions prior to 3.3.0 contain a command injection vulnerability in the user substitution logic within parse_artifact.sh where usernames and home directories from /etc/passwd are substituted directly into command strings without escaping before execution via eval. Attackers can inject shell metacharacters such as command substitution syntax or semicolons through crafted usernames or home directory paths in /etc/passwd entries to execute arbitrary commands on the analyst's host system.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.