High 7.8Published Aug 21, 2026

CVE-2026-41451UAC < 3.3.0 Command Injection via User Substitution in parse_artifact.sh

Updated under an hour ago (2026-10-19 08:23 UTC)

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It affects tclahr uac. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for tclahr uac

Exploited in the last 30 days

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.

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-78
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Aug 26, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

tclahr uac tclahr:uac (from the name)	before 3.3.0	CNA record

References

https://github.com/tclahr/uac/pull/443issue-tracking
https://github.com/tclahr/uac/commit/2cc367d8ead388f05abd3cfb8af537788a124e72patch
https://www.vulncheck.com/advisories/uac-command-injection-via-user-substitution-in-parse-artifact-shthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.