CVE-2026-54587

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.

• CWE-59
• CWE-367

• https://github.com/MidnightBSD/mport/commit/a4fa996df1fbebeff3691e1b512c807b5f414b5d
• https://github.com/MidnightBSD/mport/pull/119
• https://github.com/MidnightBSD/mport/releases/tag/2.7.8
• https://github.com/MidnightBSD/mport/security/advisories/GHSA-f69w-h3gh-r86p

Published

Sep 17, 2026

Last Modified

Sep 17, 2026

Status

Deferred

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