{"id":"CVE-2026-54576","title":"mport is the MidnightBSD Package Manager","summary":"mport is the MidnightBSD Package Manager. Prior to 2.7.8, do_actual_install() in libmport/bundle_read_install_pkg.c used path-based lstat(), chown(), stat(), and chmod() operations while installing package files. A local attacker with wr…","severity":"medium","cvss":5.8,"cvssVector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","cwe":["CWE-59","CWE-367"],"vendor":"MidnightBSD","product":"mport","affected":["mport < 2.7.8"],"published":"2026-09-17","updated":"2026-09-18","sourceUpdated":"2026-09-18T15:17:09.180","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54576","references":[{"url":"https://github.com/MidnightBSD/mport/commit/4676ac05b1056b54a3d38d03ae8a478bf12c9abe","label":"security-advisories@github.com"},{"url":"https://github.com/MidnightBSD/mport/pull/150","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-23g3-7fv3-3ccf","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-18T14:36:39.720536Z"},"cvssSource":"cna","epss":0.001,"epssPercentile":0.00986,"ingestedAt":"2026-09-17T17:23:30.627Z","slug":"CVE-2026-54576","body":"## Overview\n\nmport is the MidnightBSD Package Manager. Prior to 2.7.8, do_actual_install() in libmport/bundle_read_install_pkg.c used path-based lstat(), chown(), stat(), and chmod() operations while installing package files. A local attacker with write access to a target directory could replace a checked file with a symlink before privileged ownership or mode changes were applied, redirecting those changes to an attacker-selected path and compromising filesystem integrity or permissions. This issue is fixed 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":32,"depthScoreParts":{"impact":31.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}