{"id":"CVE-2026-40032","aliases":["EUVD-2026-20775","GHSA-vv2j-m83f-q33j"],"status":"published","title":"UAC \u003c 3.3.0-rc1 Command Injection via Placeholder Substitution","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.","severity":{"version":"4.0","score":8.5,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00739,"percentile":0.54831,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2026-04-08T21:35:27Z","modified":"2026-11-09T02:47:19Z","products":[{"vendor":"tclahr","product":"uac"}],"references":[{"url":"https://github.com/tclahr/uac/pull/443","tags":["issue-tracking","patch","fix"]},{"url":"https://github.com/tclahr/uac/commit/cb95d7166cd47908e1189d9669e43f9a6d3d707f","tags":["patch","fix"]},{"url":"https://github.com/tclahr/uac/commit/50ace60e172e38feb78347bdf579311c23eff078","tags":["patch","fix"]},{"url":"https://github.com/tclahr/uac/commit/d0fca5e36d8d6a33a4404f0f6fe92b0424544589","tags":["patch","fix"]},{"url":"https://github.com/tclahr/uac/issues/429","tags":["issue-tracking","report"]},{"url":"https://mobasi.ai/sentinel","tags":["vendor-advisory","advisory"]},{"url":"https://www.vulncheck.com/advisories/uac-rc1-command-injection-via-placeholder-substitution","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-40032","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-vv2j-m83f-q33j"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40032.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-40032","title":"UAC \u003c 3.3.0-rc1 Command Injection via Placeholder Substitution","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.","status":"published","published":"2026-04-08T21:35:27.02Z","modified":"2026-11-08T14:02:44.232Z","cvss":[{"version":"4.0","score":8.5,"vector":"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","level":"high","assessor":"cna"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-08T15:43:33.322657Z"}],"euvd":[{"id":"EUVD-2026-20775","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.","status":"published","published":"2026-04-08T21:35:27Z","modified":"2026-11-08T14:02:44Z","cvss":[{"version":"4.0","score":8.5,"vector":"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","level":"high"}],"updated_at":"2026-11-08T15:13:09.268962Z"}],"ghsa":[{"id":"GHSA-vv2j-m83f-q33j","title":"UAC (Unix-like Artifacts Collector) before 3.3.0-rc1 contains a command injection vulnerability...","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.","status":"published","published":"2026-04-09T00:31:59Z","modified":"2026-04-09T00:32:07Z","cvss":[{"version":"4.0","score":8.5,"vector":"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:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:07:23.155154Z"}],"nvd":[{"id":"CVE-2026-40032","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.","status":"published","published":"2026-04-08T22:16:23.827Z","modified":"2026-07-24T21:10:00.143Z","cvss":[{"version":"4.0","score":8.5,"vector":"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:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:12:13.902911Z"}],"osv":[{"id":"CVE-2026-40032","title":"UAC \u003c 3.3.0-rc1 Command Injection via Placeholder Substitution","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.","status":"published","published":"2026-04-08T21:35:27.02Z","modified":"2026-11-09T02:47:19.949430295Z","cvss":[{"version":"4.0","score":8.5,"vector":"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","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-09T03:16:17.543303Z"}]}}