Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/MidnightBSD/mport/commit/cad959d47bc79a62b6a7163800fbfe35633e
- 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
FAQ
What is CVE-2026-54583?
CVE-2026-54583 is a documented vulnerability. 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 w...
How severe is CVE-2026-54583?
CVSS scoring is not yet available for CVE-2026-54583. Check NVD for updates.
Is there a patch for CVE-2026-54583?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.