{"id":"CVE-2026-34387","aliases":["EUVD-2026-16758","GHSA-7rhw-5mpv-gp4h"],"status":"published","title":"Fleet vulnerable to OS command injection via crafted software package metadata in uninstall scripts","description":"Fleet is open source device management software. Prior to 4.81.1, a command injection vulnerability in Fleet's software installer pipeline allows an attacker to achieve arbitrary code execution as root (macOS/Linux) or SYSTEM (Windows) on managed hosts when an uninstall is triggered for a crafted software package. Version 4.81.1 patches the issue.","severity":{"version":"4.0","score":5.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01332,"percentile":0.71521,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-78"],"published":"2026-03-27T18:31:27Z","modified":"2026-10-28T02:30:50Z","products":[{"vendor":"fleetdm","product":"fleet"}],"references":[{"url":"https://github.com/fleetdm/fleet/security/advisories/GHSA-7rhw-5mpv-gp4h","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34387.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34387","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-34387","title":"Fleet vulnerable to OS command injection via crafted software package metadata in uninstall scripts","description":"Fleet is open source device management software. Prior to 4.81.1, a command injection vulnerability in Fleet's software installer pipeline allows an attacker to achieve arbitrary code execution as root (macOS/Linux) or SYSTEM (Windows) on managed hosts when an uninstall is triggered for a crafted software package. Version 4.81.1 patches the issue.","status":"published","published":"2026-03-27T18:31:27.871Z","modified":"2026-03-27T19:31:54.764Z","cvss":[{"version":"4.0","score":5.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U","level":"medium","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:20:14.665567Z"}],"euvd":[{"id":"EUVD-2026-16758","description":"Fleet is open source device management software. Prior to 4.81.1, a command injection vulnerability in Fleet's software installer pipeline allows an attacker to achieve arbitrary code execution as root (macOS/Linux) or SYSTEM (Windows) on managed hosts when an uninstall is triggered for a crafted software package. Version 4.81.1 patches the issue.","status":"published","published":"2026-03-27T18:31:27Z","modified":"2026-03-27T19:31:54Z","cvss":[{"version":"4.0","score":5.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U","level":"medium"}],"updated_at":"2026-11-02T19:25:27.277964Z"}],"nvd":[{"id":"CVE-2026-34387","description":"Fleet is open source device management software. Prior to 4.81.1, a command injection vulnerability in Fleet's software installer pipeline allows an attacker to achieve arbitrary code execution as root (macOS/Linux) or SYSTEM (Windows) on managed hosts when an uninstall is triggered for a crafted software package. Version 4.81.1 patches the issue.","status":"published","published":"2026-03-27T19:16:43.59Z","modified":"2026-10-26T22:10:00.163Z","cvss":[{"version":"4.0","score":5.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/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":"medium","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:12:11.678711Z"}],"osv":[{"id":"CVE-2026-34387","title":"Fleet vulnerable to OS command injection via crafted software package metadata in uninstall scripts","description":"Fleet is open source device management software. Prior to 4.81.1, a command injection vulnerability in Fleet's software installer pipeline allows an attacker to achieve arbitrary code execution as root (macOS/Linux) or SYSTEM (Windows) on managed hosts when an uninstall is triggered for a crafted software package. Version 4.81.1 patches the issue.","status":"published","published":"2026-03-27T18:31:27.871Z","modified":"2026-10-28T02:30:50.603256733Z","cvss":[{"version":"4.0","score":5.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U","level":"medium"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:45:02.247031Z"}]}}