Arbitrary command execution via unescaped placeholder expansion
Published Aug 21, 2026 · Updated Aug 21, 2026
Command injection in UAC before 3.3.0 allows attackers to execute arbitrary commands through crafted filenames or artifact definitions. The _command_collector function inserts foreach output into command strings with sed without shell escaping, then passes the resulting strings to eval. Exploitation requires an analyst to run a collection against attacker-influenced content; injected commands execute on the analyst's host with the UAC process privileges.
Summary
What happened
Command injection in UAC before 3.3.0 allows attackers to execute arbitrary commands through crafted filenames or artifact definitions. The _command_collector function inserts foreach output into command strings with sed without shell escaping, then passes the resulting strings to eval. Exploitation requires an analyst to run a collection against attacker-influenced content; injected commands execute on the analyst's host with the UAC process privileges.
The record
- CVE
- CVE-2026-41450
- Published
- Aug 21, 2026
- Updated
- Aug 21, 2026
- Vendor
- Thiago Canozzo Lahr
- Product
- Unix-like Artifacts Collector (UAC)
- Classifications
- CWE-78, T1059.004
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 21, 2026CVE publishedPublication date reported by the CVE source.
- Aug 21, 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.
- Affected versionversion=0 <3.3.0
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
- crit-002 foreach-line injection proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo