{"id":"CVE-2026-54579","summary":"mport mirror-selection ping accepts insufficiently validated ICMP replies","details":"mport is the MidnightBSD Package Manager. Prior to 2.7.8, ping() in libmport/ping.c accepted ICMP replies without validating icmp_id or icmp_seq and parsed the reply using a fixed IP-header offset instead of ip_hl. A network attacker able to inject or spoof visible ICMP replies could influence mirror latency selection, while a malformed packet carrying IP options could shift the ICMP header and trigger an out-of-bounds read. This issue is fixed in version 2.7.8.","aliases":["GHSA-qc2f-2j7j-m3r7"],"modified":"2026-09-19T03:30:41.632198371Z","published":"2026-09-17T16:59:52.147Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-125","CWE-345"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54579.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54579.json"},{"type":"ADVISORY","url":"https://github.com/MidnightBSD/mport/security/advisories/GHSA-qc2f-2j7j-m3r7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54579"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/midnightbsd/mport","events":[{"introduced":"0"},{"fixed":"899c8fe2d3ceb25d899e70dbd0c7744b7d7a0946"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.7.8"}],"source":"AFFECTED_FIELD"}}],"versions":["2.7.6","2.7.5","2.7.4","2.7.3","2.7.2","2.7.1","2.7.0","2.6.8","2.6.7","2.6.5","2.6.4","2.6.3","2.6.2","2.6.1","2.6.0","2.5.1","2.5.0","2.4.8","2.4.7","2.4.6","2.4.5","2.4.4","2.4.3","2.4.1","2.4.0","2.3.0","2.2.9.1","2.2.9","2.2.8","2.2.7","2.2.6","2.2.5","2.2.4","2.2.3","2.2.2","2.2.1","2.2.0","2.1.9","2.1.8","2.1.7","2.1.6","2.1.5","2.1.4","2.1.3","2.1.2","2.1.1","2.1.0","2.0.9","2.0.8","2.0.7","2.0.6","2.0.5","2.0.2","2.0.1","2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54579.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"}]}