CVE-2026-54576

mport is the MidnightBSD Package Manager. Prior to 2.7.8, do_actual_install() in libmport/bundle_read_install_pkg.c used path-based lstat(), chown(), stat(), and chmod() operations while installing package files. A local attacker with write access to a target directory could replace a checked file with a symlink before privileged ownership or mode changes were applied, redirecting those changes to an attacker-selected path and compromising filesystem integrity or permissions. This issue is fixed in version 2.7.8.

CVSS

No CVSS.

References

Link	Resource
https://github.com/MidnightBSD/mport/commit/4676ac05b1056b54a3d38d03ae8a478bf12c9abe
https://github.com/MidnightBSD/mport/pull/150
https://github.com/MidnightBSD/mport/releases/tag/2.7.8
https://github.com/MidnightBSD/mport/security/advisories/GHSA-23g3-7fv3-3ccf

Configurations

No configuration.

History

17 Sep 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 17:16

Updated : 2026-09-18 15:17

NVD link : CVE-2026-54576

Mitre link : CVE-2026-54576

CVE.ORG link : CVE-2026-54576

JSON object : View

Products Affected

No product.

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

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