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Vulnerability record · CVE-2026-40032 · published 8 April 2026

CVE-2026-40032: OS command injection vulnerability

UAC (Unix-like Artifacts Collector) before 3.3.0-rc1 contains a command injection vulnerability in the placeholder substitution and command execution pipeline where the _run_command() function passes constructed command strings directly to eval without proper sanitization. Attackers can inject shell metacharacters or command substitutions through attacker-controlled inputs including %line% values from foreach iterators and %user% / %user_home% values derived from system files to achieve arbitrary command execution with the privileges of the UAC process.

8.5 CVSS 4.0 High EPSS 1.2% · top 33.5% CWE-78 · OS command injection Awaiting Analysis
8.5CVSS 4.0 base score
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
7References
24 Jul 2026Last modified by NVD

Description

UAC (Unix-like Artifacts Collector) before 3.3.0-rc1 contains a command injection vulnerability in the placeholder substitution and command execution pipeline where the _run_command() function passes constructed command strings directly to eval without proper sanitization. Attackers can inject shell metacharacters or command substitutions through attacker-controlled inputs including %line% values from foreach iterators and %user% / %user_home% values derived from system files to achieve arbitrary command execution with the privileges of the UAC process.

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/tclahr/uac/commit/50ace60e172e38feb78347bdf579311c23eff078
https://github.com/tclahr/uac/commit/cb95d7166cd47908e1189d9669e43f9a6d3d707f
https://github.com/tclahr/uac/commit/d0fca5e36d8d6a33a4404f0f6fe92b0424544589
https://github.com/tclahr/uac/issues/429
https://github.com/tclahr/uac/pull/443
https://mobasi.ai/sentinel
https://www.vulncheck.com/advisories/uac-rc1-command-injection-via-placeholder-substitution

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Source: NIST National Vulnerability Database (record CVE-2026-40032), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.