{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2020-37248", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "state": "PUBLISHED", "assignerShortName": "mitre", "dateReserved": "2026-06-08T15:05:08.771Z", "datePublished": "2026-06-08T15:05:09.298Z", "dateUpdated": "2026-06-08T15:06:07.728Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "packageURL": "pkg:pypi/offlineimap", "product": "OfflineIMAP", "vendor": "OfflineIMAP", "versions": [{"lessThan": "8.0.3", "status": "affected", "version": "0", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:offlineimap:offlineimap:*:*:*:*:*:*:*:*", "versionEndExcluding": "8.0.3"}]}]}], "descriptions": [{"lang": "en", "value": "OfflineIMAP before 8.0.3 trusts the server with their STARTTLS capability prior to authentication, which allows STRIPTLS/man-in-the-middle attacks, taking over the connection and extracting account credentials in cleartext."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-348", "description": "CWE-348 Use of Less Trusted Source", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-06-08T15:06:07.728Z"}, "references": [{"url": "https://github.com/OfflineIMAP/offlineimap3/commit/46505c53ef995455d66c685f9ec3ff6ea93dbb74"}, {"url": "https://github.com/OfflineIMAP/offlineimap3/issues/222"}, {"url": "https://github.com/OfflineIMAP/offlineimap/issues/669"}, {"url": "https://pypi.org/project/offlineimap/#history"}], "x_generator": {"engine": "CVE-Request-form 0.0.1"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "OfflineIMAP before 8.0.3 trusts the server with their STARTTLS capability prior to authentication, which allows STRIPTLS/man-in-the-middle attacks, taking over the connection and extracting account credentials in cleartext."}], "id": "CVE-2020-37248", "lastModified": "2026-06-08T16:16:33.257", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 4.2, "source": "cve@mitre.org", "type": "Secondary"}]}, "published": "2026-06-08T16:16:33.257", "references": [{"source": "cve@mitre.org", "url": "https://github.com/OfflineIMAP/offlineimap/issues/669"}, {"source": "cve@mitre.org", "url": "https://github.com/OfflineIMAP/offlineimap3/commit/46505c53ef995455d66c685f9ec3ff6ea93dbb74"}, {"source": "cve@mitre.org", "url": "https://github.com/OfflineIMAP/offlineimap3/issues/222"}, {"source": "cve@mitre.org", "url": "https://pypi.org/project/offlineimap/#history"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-348"}], "source": "cve@mitre.org", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,8.0.3)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "inferred", "scores": [{"score": 100.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "OfflineIMAP", "source": "cna", "vendor": "OfflineIMAP"}, "product": "offlineimap", "vendor": "offlineimap"}], "created": "2026-06-08T16:30:06.158488+00:00", "title": "Startup TLS Trust Issue Enables Credential Disclosure", "updated": "2026-06-08T16:30:06.605741+00:00", "vendors": ["offlineimap", "offlineimap$PRODUCT$offlineimap"]}