MidnightBSD mport up to 2.7.7 bundle_read_install_pkg.c create_sample_file path traversal

Summaryinfo

A vulnerability classified as problematic has been found in MidnightBSD mport up to 2.7.7. This affects the function create_sample_file of the file libmport/bundle_read_install_pkg.c. The manipulation leads to path traversal. This vulnerability is documented as CVE-2026-54585. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in MidnightBSD mport up to 2.7.7. It has been rated as problematic. This issue affects the function create_sample_file of the file libmport/bundle_read_install_pkg.c. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is integrity, and availability. The summary by CVE is:

mport is the MidnightBSD Package Manager. Prior to 2.7.8, create_sample_file() in libmport/bundle_read_install_pkg.c did not constrain absolute source and destination paths from the sample-file manifest directive to mport->root. A malicious or malformed package manifest could therefore direct privileged sample-file handling to copy or write outside the configured installation root, compromising local filesystem integrity. This issue is fixed in version 2.7.8.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-54585 since 06/15/2026. The exploitation is known to be easy. The attack may be initiated remotely. The exploitation needs additional levels of successful authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 2.7.8 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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/

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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