{"id":"CVE-2026-54586","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-54586","generatedAt":"2026-10-28T01:42:08.818Z","title":"When a cleartext URL was configured or returned by mirror data, a network-positioned attacker could tamper with package index or package download traffic and compromise package selection or integrity.","description":"mport is the MidnightBSD Package Manager. Prior to 2.7.8, the mport_fetch_index(), mport_fetch_bootstrap_index(), and mport_fetch_bundle() paths in libmport/fetch.c accepted non-HTTPS repository and package mirror URLs without a url_is_https() enforcement check. When a cleartext URL was configured or returned by mirror data, a network-positioned attacker could tamper with package index or package download traffic and compromise package selection or integrity. This issue is fixed in version 2.7.8.","published":"2026-09-17T17:16:44.000Z","lastModified":"2026-09-21T21:17:05.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":6,"severity":"MEDIUM","vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-319","CWE-345"],"affected":[],"epss":{"score":0.00154,"percentile":0.04455,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.15%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/MidnightBSD/mport/commit/9b4d0f9192b243ee32266afa36dce430b257b921","source":"security-advisories@github.com"},{"url":"https://github.com/MidnightBSD/mport/pull/121","source":"security-advisories@github.com"},{"url":"https://github.com/MidnightBSD/mport/releases/tag/2.7.8","source":"security-advisories@github.com"},{"url":"https://github.com/MidnightBSD/mport/security/advisories/GHSA-v5pv-7gxw-74r5","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-54586","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}