{"id":"CVE-2026-54580","published":"2026-09-17T17:16:43.150","lastModified":"2026-09-17T21:15:06.427","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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-354","CWE-755"],"vendors":[],"products":[],"references":[{"url":"https://github.com/MidnightBSD/mport/commit/b3e11ba078351402082a881209ee6fda5d332e3d","tags":[]},{"url":"https://github.com/MidnightBSD/mport/pull/135","tags":[]},{"url":"https://github.com/MidnightBSD/mport/releases/tag/2.7.8","tags":[]},{"url":"https://github.com/MidnightBSD/mport/security/advisories/GHSA-ffqj-j42r-747w","tags":[]}],"exploitRefs":[{"url":"https://github.com/MidnightBSD/mport/commit/b3e11ba078351402082a881209ee6fda5d332e3d","tags":[]},{"url":"https://github.com/MidnightBSD/mport/pull/135","tags":[]},{"url":"https://github.com/MidnightBSD/mport/releases/tag/2.7.8","tags":[]},{"url":"https://github.com/MidnightBSD/mport/security/advisories/GHSA-ffqj-j42r-747w","tags":[]}],"hasPoc":true,"ai":null}