CVE-2026-54580 (GCVE-0-2026-54580)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:51 – Updated: 2026-09-24 20:55
VLAI
Title
mport index decompression can leave partial or corrupt index data after zstd failures
Summary
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.
Severity
8.3 (High)
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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-24 20:37 UTC
CWE
  • CWE-354 - Improper Validation of Integrity Check Value
  • CWE-755 - Improper Handling of Exceptional Conditions
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
MidnightBSD mport Affected: < 2.7.8
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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