MidnightBSD mport up to 2.7.7 Package Installation check_preconditions.c force privileges management

Summaryinfo

A vulnerability described as problematic has been identified in MidnightBSD mport up to 2.7.7. The impacted element is an unknown function of the file libmport/check_preconditions.c of the component Package Installation. Executing a manipulation of the argument force can lead to privileges management. This vulnerability is registered as CVE-2026-54582. The attack needs to be launched locally. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in MidnightBSD mport up to 2.7.7. It has been declared as problematic. This vulnerability affects an unknown code block of the file libmport/check_preconditions.c of the component Package Installation. The manipulation of the argument force with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-54582 since 06/15/2026. The exploitation appears to be easy. The attack needs to be approached locally. The exploitation requires an enhanced level of successful authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 2.7.8 eliminates this vulnerability.

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Productinfo

Vendor

• MidnightBSD

Name

• mport

Version

• 2.7.0
• 2.7.1
• 2.7.2
• 2.7.3
• 2.7.4
• 2.7.5
• 2.7.6
• 2.7.7

Website

• Product: https://github.com/MidnightBSD/mport/

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