{"id":"CVE-2026-54580","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-54580","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…","details":"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.","published":"2026-09-17T17:16:43.150","modified":"2026-09-17T17:16:43.150","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/MidnightBSD/mport/commit/b3e11ba078351402082a881209ee6fda5d332e3d","label":"MidnightBSD/mport@b3e11ba"},"references":[{"type":"WEB","url":"https://github.com/MidnightBSD/mport/commit/b3e11ba078351402082a881209ee6fda5d332e3d"},{"type":"WEB","url":"https://github.com/MidnightBSD/mport/pull/135"},{"type":"WEB","url":"https://github.com/MidnightBSD/mport/releases/tag/2.7.8"},{"type":"WEB","url":"https://github.com/MidnightBSD/mport/security/advisories/GHSA-ffqj-j42r-747w"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-17T17:16:43.150"}}