HIGH

CVE-2026-54583

2026-09-17 CVSS v4.0

CVSS

8.3

Description

mport is the MidnightBSD Package Manager. Prior to 2.7.8, libmport/fetch.c did not consistently reject empty, dot, dot-dot, or slash-containing bundle filenames before composing package download and write paths. Malicious package index data could place an unsafe value in indexEntry->bundlefile, and the missing is_valid_bundle_filename() checks allowed downloaded package data to be written outside the intended cache location or to an unsafe destination name. This issue is fixed in version 2.7.8.

Weakness (CWE)

CWE-22 Path Traversal

CWE-73

EPSS Score

0.52%

Probability of exploitation in next 30 days

42.9th percentile

References

https://github.com/MidnightBSD/mport/commit/cad959d47bc79a62b6a7163800fbfe35633e7cf8 https://github.com/MidnightBSD/mport/pull/125 https://github.com/MidnightBSD/mport/releases/tag/2.7.8 https://github.com/MidnightBSD/mport/security/advisories/GHSA-mr62-mqwj-vhh3

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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