mport is the MidnightBSD Package Manager. Prior to 2.7.8, directory assets handled as ASSET_DIR or ASSET_DIR_OWNER_MODE in libmport/bundle_read_install_pkg.c used path-based mport_mkdirp(), ownership, and permission operations. A local attacker able to modify part of the target installation tree could use dot-dot traversal or substitute symlinks during privileged package installation, causing directory creation or attribute changes to affect attacker-selected paths outside the intended package directories. This issue is fixed in version 2.7.8.
History

Fri, 18 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Midnightbsd
Midnightbsd mport
Vendors & Products Midnightbsd
Midnightbsd mport

Thu, 17 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 17 Sep 2026 17:15:00 +0000

Type Values Removed Values Added
Description mport is the MidnightBSD Package Manager. Prior to 2.7.8, directory assets handled as ASSET_DIR or ASSET_DIR_OWNER_MODE in libmport/bundle_read_install_pkg.c used path-based mport_mkdirp(), ownership, and permission operations. A local attacker able to modify part of the target installation tree could use dot-dot traversal or substitute symlinks during privileged package installation, causing directory creation or attribute changes to affect attacker-selected paths outside the intended package directories. This issue is fixed in version 2.7.8.
Title mport directory asset installation is vulnerable to symlink and path traversal races
Weaknesses CWE-367
CWE-59
References
Metrics cvssV4_0

{'score': 5.8, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-09-17T16:56:33.174Z

Updated: 2026-09-17T19:15:12.857Z

Reserved: 2026-06-15T19:15:27.345Z

Link: CVE-2026-54587

cve-icon Vulnrichment

Updated: 2026-09-17T19:15:04.931Z

cve-icon NVD

Status : Deferred

Published: 2026-09-17T17:16:44.020

Modified: 2026-09-17T21:15:06.427

Link: CVE-2026-54587

cve-icon Redhat

No data.