{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54583","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-15T19:15:27.344Z","datePublished":"2026-09-17T16:46:28.371Z","dateUpdated":"2026-09-17T17:00:25.780Z"},"containers":{"cna":{"title":"mport package bundle downloads allow unsafe destination filenames","problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-73","lang":"en","description":"CWE-73: External Control of File Name or Path","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.3,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/MidnightBSD/mport/security/advisories/GHSA-mr62-mqwj-vhh3","tags":["x_refsource_CONFIRM"],"url":"https://github.com/MidnightBSD/mport/security/advisories/GHSA-mr62-mqwj-vhh3"},{"name":"https://github.com/MidnightBSD/mport/pull/125","tags":["x_refsource_MISC"],"url":"https://github.com/MidnightBSD/mport/pull/125"},{"name":"https://github.com/MidnightBSD/mport/commit/cad959d47bc79a62b6a7163800fbfe35633e7cf8","tags":["x_refsource_MISC"],"url":"https://github.com/MidnightBSD/mport/commit/cad959d47bc79a62b6a7163800fbfe35633e7cf8"},{"name":"https://github.com/MidnightBSD/mport/releases/tag/2.7.8","tags":["x_refsource_MISC"],"url":"https://github.com/MidnightBSD/mport/releases/tag/2.7.8"}],"affected":[{"vendor":"MidnightBSD","product":"mport","versions":[{"version":"< 2.7.8","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-17T16:46:28.371Z"},"descriptions":[{"lang":"en","value":"mport is the MidnightBSD Package Manager. Prior to 2.7.8, libmport/fetch.c did not consistently reject empty, dot, dot-dot, or slash-containing bundle filenames before composing package download and write paths. Malicious package index data could place an unsafe value in indexEntry->bundlefile, and the missing is_valid_bundle_filename() checks allowed downloaded package data to be written outside the intended cache location or to an unsafe destination name. This issue is fixed in version 2.7.8."}],"source":{"advisory":"GHSA-mr62-mqwj-vhh3","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-17T16:59:46.851963Z","id":"CVE-2026-54583","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-17T17:00:25.780Z"}}]}}