CVE-2026-54580

mport index decompression can leave partial or corrupt index data after zstd failures

Published: Sep 17, 2026Updated: Sep 24, 2026 Sources: CVE List NVDCWE-354

N/ACVSS

NVD MITRE

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.

No summary for this CVE yet.

Weaknesses

CWE-354 CWE-755

Affected Products

MidnightBSD

oss-project

mportOn-prem

Operating Systems / unix-bsd

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://github.com/MidnightBSD/mport/commit/b3e11ba078351402082a881209ee6fda5d332e3d

github.com

https://github.com/MidnightBSD/mport/pull/135

github.com

https://github.com/MidnightBSD/mport/releases/tag/2.7.8

github.com

and 1 more references View all →

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