{"id":"CVE-2026-54584","title":"mport is the MidnightBSD Package Manager","summary":"mport is the MidnightBSD Package Manager. mport before 2.7.8 used TMPDIR while extracting package metafiles, including when running as root or in setuid/setgid contexts. An attacker able to control the environment for a privileged mport …","severity":"medium","cvss":5.3,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","cwe":["CWE-73","CWE-377"],"vendor":"MidnightBSD","product":"mport","affected":["mport < 2.7.8"],"published":"2026-09-21","updated":"2026-09-21","sourceUpdated":"2026-09-21T15:17:29.107","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54584","references":[{"url":"https://github.com/MidnightBSD/mport/commit/3790fa49a36cb085f48b204ef189fb82bbee621a","label":"security-advisories@github.com"},{"url":"https://github.com/MidnightBSD/mport/pull/123","label":"security-advisories@github.com"},{"url":"https://github.com/MidnightBSD/mport/releases/tag/2.7.8","label":"security-advisories@github.com"},{"url":"https://github.com/MidnightBSD/mport/security/advisories/GHSA-4vv3-3h8r-q6mq","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"cvssSource":"cna","ingestedAt":"2026-09-21T14:38:56.372Z","slug":"CVE-2026-54584","body":"## Overview\n\nmport is the MidnightBSD Package Manager. mport before 2.7.8 used TMPDIR while extracting package metafiles, including when running as root or in setuid/setgid contexts. An attacker able to control the environment for a privileged mport invocation could redirect temporary metadata extraction to an attacker-controlled location. PR 123 ignores unsafe TMPDIR values in privileged contexts and rejects empty TMPDIR. This issue has been patched in version 2.7.8.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}