CVE WatchSep 17, 2026

CVE-2026-54583

mport is the MidnightBSD Package Manager. Prior to 2.7.8, libmport/fetch.c did not consistently reject empty, dot, dot-dot, or slash-contain

CVSS

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No CVSS

EPSS

0.5%

p43

KEV

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Exploit Today

0-100

Published: Sep 17, 2026 · Last modified: Sep 17, 2026 · CWE-22 · CWE-73

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

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