{"id":"CVE-2026-54584","aliases":["EUVD-2026-83920","GHSA-4vv3-3h8r-q6mq"],"status":"published","title":"mport trusts environment-controlled temporary directories in privileged metadata extraction","description":"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 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.","severity":{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00466,"percentile":0.40605,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-377","CWE-73"],"published":"2026-09-21T14:05:48Z","modified":"2026-10-28T10:52:09Z","products":[{"vendor":"midnightbsd","product":"mport"}],"references":[{"url":"https://github.com/MidnightBSD/mport/security/advisories/GHSA-4vv3-3h8r-q6mq","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/MidnightBSD/mport/pull/123","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/MidnightBSD/mport/commit/3790fa49a36cb085f48b204ef189fb82bbee621a","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/MidnightBSD/mport/releases/tag/2.7.8","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54584.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54584","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-54584","title":"mport trusts environment-controlled temporary directories in privileged metadata extraction","description":"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 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.","status":"published","published":"2026-09-21T14:05:48.447Z","modified":"2026-09-25T19:23:13.124Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"cna"}],"cwes":["CWE-73","CWE-377"],"updated_at":"2026-11-02T13:38:20.971157Z"}],"euvd":[{"id":"EUVD-2026-83920","description":"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 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.","status":"published","published":"2026-09-21T14:05:48Z","modified":"2026-09-25T19:23:13Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T17:27:55.070935Z"}],"nvd":[{"id":"CVE-2026-54584","description":"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 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.","status":"published","published":"2026-09-21T15:17:29.107Z","modified":"2026-09-25T20:17:08.07Z","cvss":[{"version":"4.0","score":5.3,"vector":"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/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":"medium","assessor":"secondary"}],"cwes":["CWE-73","CWE-377"],"updated_at":"2026-11-02T14:12:50.043898Z"}],"osv":[{"id":"CVE-2026-54584","title":"mport trusts environment-controlled temporary directories in privileged metadata extraction","description":"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 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.","status":"published","published":"2026-09-21T14:05:48.447Z","modified":"2026-10-28T10:52:09.990350347Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"cwes":["CWE-377","CWE-73"],"updated_at":"2026-11-02T15:45:10.818486Z"}]}}