{"id":"CVE-2026-54578","state":"PUBLISHED","title":"mport verify can compare stale checksum data after hashing failures","description":"mport is the MidnightBSD Package Manager. Prior to 2.7.8, mport_verify_package() in libmport/verify.c could continue after MD5File() or SHA256_File() failed and compare an expected checksum with stale data in the hash buffer rather than a newly computed digest. An attacker able to influence an installed file or the conditions that make hashing fail could receive a misleading integrity result or hide a checksum failure. This issue is fixed in version 2.7.8.","publishedAt":"2026-09-17T16:54:20.195Z","updatedAt":"2026-09-18T14:44:44.118Z","severity":{"score":2,"label":"Low","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["MidnightBSD mport"],"affected":[{"vendor":"MidnightBSD","product":"mport","versions":[{"version":"< 2.7.8","status":"affected"}]}],"references":["https://github.com/MidnightBSD/mport/security/advisories/GHSA-hgmr-9p75-q5cg","https://github.com/MidnightBSD/mport/pull/138","https://github.com/MidnightBSD/mport/commit/cd9991c3cc1f60ecb3f378852ad8b5caa820e990","https://github.com/MidnightBSD/mport/releases/tag/2.7.8"],"weaknesses":["CWE-354","CWE-755"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/54xxx/CVE-2026-54578.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54578","state":"PUBLISHED","datePublished":"2026-09-17T16:54:20.195Z","dateUpdated":"2026-09-18T14:44:44.118Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-15T19:15:27.344Z"},"containers":{"cna":{"title":"mport verify can compare stale checksum data after hashing failures","descriptions":[{"lang":"en","value":"mport is the MidnightBSD Package Manager. Prior to 2.7.8, mport_verify_package() in libmport/verify.c could continue after MD5File() or SHA256_File() failed and compare an expected checksum with stale data in the hash buffer rather than a newly computed digest. An attacker able to influence an installed file or the conditions that make hashing fail could receive a misleading integrity result or hide a checksum failure. This issue is fixed in version 2.7.8."}],"affected":[{"vendor":"MidnightBSD","product":"mport","versions":[{"version":"< 2.7.8","status":"affected"}]}],"references":[{"url":"https://github.com/MidnightBSD/mport/security/advisories/GHSA-hgmr-9p75-q5cg","name":"https://github.com/MidnightBSD/mport/security/advisories/GHSA-hgmr-9p75-q5cg","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/MidnightBSD/mport/pull/138","name":"https://github.com/MidnightBSD/mport/pull/138","tags":["x_refsource_MISC"]},{"url":"https://github.com/MidnightBSD/mport/commit/cd9991c3cc1f60ecb3f378852ad8b5caa820e990","name":"https://github.com/MidnightBSD/mport/commit/cd9991c3cc1f60ecb3f378852ad8b5caa820e990","tags":["x_refsource_MISC"]},{"url":"https://github.com/MidnightBSD/mport/releases/tag/2.7.8","name":"https://github.com/MidnightBSD/mport/releases/tag/2.7.8","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":2,"baseSeverity":"LOW","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-354","lang":"en","description":"CWE-354: Improper Validation of Integrity Check Value","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-755","lang":"en","description":"CWE-755: Improper Handling of Exceptional Conditions","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-17T16:54:20.195Z"},"source":{"advisory":"GHSA-hgmr-9p75-q5cg","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-18T14:36:37.692551Z","id":"CVE-2026-54578","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-18T14:44:44.118Z"}}]}}}