CVE-2026-54582
mport is the MidnightBSD Package Manager. Prior to 2.7.8, package installation lacked a preflight check for incoming non-directory assets that already existed on disk. The affected logic across libmport/check_preconditions.c, libmport/install_primative.c, and libmport/mport_private.h did not apply MPORT_PRECHECK_FILE_CONFLICTS, so a crafted or conflicting package could overwrite a file owned by another package or unmanaged by mport. The check is bypassed only when the operator explicitly enables mport->force. Privileged installation without that override could compromise local filesystem integrity and package database consistency. This issue is fixed in version 2.7.8.
- Score
- CVSS 4.0 6.0 Medium
- Status
- Deferred - security-advisories@github.com
- Published
- 2026-09-17
- Last modified
- 2026-09-17
- Weaknesses
- CWE-668, CWE-73
Affected products
References
- https://github.com/MidnightBSD/mport/commit/c643312d149dcc994957dbafa8f6f6b61e945e39
- https://github.com/MidnightBSD/mport/pull/131
- https://github.com/MidnightBSD/mport/releases/tag/2.7.8
- https://github.com/MidnightBSD/mport/security/advisories/GHSA-5773-7r4r-rpgx
