{"id":"CVE-2026-54580","revision":"e370c647e64847f896e93dbe427e5789","records":[{"revision":"e370c647e64847f896e93dbe427e5789","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-54580","aliases":[],"title":"mport index decompression can leave partial or corrupt index data after zstd failures","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.","state":0,"publishedAt":"2026-09-17T16:51:29.785+00:00","modifiedAt":"2026-09-24T20:55:22.459+00:00","affected":[{"ecosystem":"Vendor product","name":"mport","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"MidnightBSD\",\n                    \"product\": \"mport\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.7.8\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","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","score":8.3,"severity":"HIGH"}],"references":["https://github.com/MidnightBSD/mport/security/advisories/GHSA-ffqj-j42r-747w","https://github.com/MidnightBSD/mport/pull/135","https://github.com/MidnightBSD/mport/commit/b3e11ba078351402082a881209ee6fda5d332e3d","https://github.com/MidnightBSD/mport/releases/tag/2.7.8"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-54580","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-54580","identifiers":["CVE-2026-54580"]},"retained":false,"historicalAffected":[]}],"coverage":[]}