mport is the MidnightBSD Package Manager. Prior to 2.7.8, libmport/util.c did not make every truncated, corrupt, or failed zstd stream fatal in mport_decompress_zstd(), and libmport/fetch.c did not consistently propagate those failures to index-fetch callers. A malicious or faulty mirror could supply compressed package index data that caused ZSTD_decompressStream() or an output write to fail while leaving partial index output available for later use, resulting in package-index integrity loss or denial of service. This issue is fixed in version 2.7.8.

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History

Thu, 24 Sep 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 18 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Midnightbsd
Midnightbsd mport
Vendors & Products Midnightbsd
Midnightbsd mport

Thu, 17 Sep 2026 17:00:00 +0000

Type Values Removed Values Added
Description mport is the MidnightBSD Package Manager. Prior to 2.7.8, libmport/util.c did not make every truncated, corrupt, or failed zstd stream fatal in mport_decompress_zstd(), and libmport/fetch.c did not consistently propagate those failures to index-fetch callers. A malicious or faulty mirror could supply compressed package index data that caused ZSTD_decompressStream() or an output write to fail while leaving partial index output available for later use, resulting in package-index integrity loss or denial of service. This issue is fixed in version 2.7.8.
Title mport index decompression can leave partial or corrupt index data after zstd failures
Weaknesses CWE-354
CWE-755
References
Metrics cvssV4_0

{'score': 8.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-24T20:55:22.459Z

Reserved: 2026-06-15T19:15:27.344Z

Link: CVE-2026-54580

cve-icon Vulnrichment

Updated: 2026-09-24T20:49:59.049Z

cve-icon NVD

Status : Deferred

Published: 2026-09-17T17:16:43.150

Modified: 2026-09-24T21:17:16.487

Link: CVE-2026-54580

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-19T03:00:13Z

Weaknesses