CVE-2026-40032 UAC < 3.3.0-rc1 Command Injection via Placeholder Substitution
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-40032?
CVE-2026-40032 is a high-severity vulnerability in tclahr UAC, published on 8 Apr 2026.
Official 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.
Weakness: CWE-78
Which versions are affected by CVE-2026-40032?
How do I fix CVE-2026-40032?
No fix has been published for CVE-2026-40032 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-40032 being exploited?
There is no known exploitation of CVE-2026-40032 in the wild and no public exploit code.
Sources
Also known as GHSA-vv2j-m83f-q33j.