CVE-2026-54585

6.0 mediumEPSS 0.5%

Medium (6.0). EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

6.0 medium

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 45% of CVEs (scores of 2026-10-31)
CWE: CWE-22
Published: 2026-09-17
Modified: 2026-09-17
Record from: the NVD, synced 2026-10-19

References

https://github.com/MidnightBSD/mport/commit/36a42c8ddbd23ee9eb72c4c17596eb92cb423cf0
https://github.com/MidnightBSD/mport/pull/122
https://github.com/MidnightBSD/mport/releases/tag/2.7.8
https://github.com/MidnightBSD/mport/security/advisories/GHSA-xqjc-rxmm-p27v

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