{"dataType": "CVE_RECORD", "cveMetadata": {"cveId": "CVE-2026-44603", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "state": "PUBLISHED", "assignerShortName": "mitre", "dateReserved": "2026-05-07T03:21:24.363Z", "datePublished": "2026-05-07T03:21:24.822Z", "dateUpdated": "2026-05-07T03:36:57.931Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "Tor", "vendor": "torproject", "versions": [{"lessThan": "0.4.9.7", "status": "affected", "version": "0", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Tor before 0.4.9.7 has an out-of-bounds read by one byte via a malformed BEGIN cell, aka TROVE-2026-007."}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-193", "description": "CWE-193 Off-by-one Error", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-05-07T03:36:57.931Z"}, "references": [{"url": "https://forum.torproject.org/c/news/tor-release-announcement/28"}, {"url": "https://www.openwall.com/lists/oss-security/2026/05/06/8"}, {"url": "https://gitlab.torproject.org/tpo/core/tor/-/work_items/41245"}, {"url": "https://gitlab.torproject.org/tpo/core/tor/-/commit/1703df3d439c83c2184e259fad1cfa19240f9c89"}], "x_generator": {"engine": "CVE-Request-form 0.0.1"}, "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*", "versionEndExcluding": "0.4.9.7"}]}]}]}}, "dataVersion": "5.2"}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Tor before 0.4.9.7 has an out-of-bounds read by one byte via a malformed BEGIN cell, aka TROVE-2026-007."}], "id": "CVE-2026-44603", "lastModified": "2026-05-07T04:16:35.387", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 1.4, "source": "cve@mitre.org", "type": "Secondary"}]}, "published": "2026-05-07T04:16:35.387", "references": [{"source": "cve@mitre.org", "url": "https://forum.torproject.org/c/news/tor-release-announcement/28"}, {"source": "cve@mitre.org", "url": "https://gitlab.torproject.org/tpo/core/tor/-/commit/1703df3d439c83c2184e259fad1cfa19240f9c89"}, {"source": "cve@mitre.org", "url": "https://gitlab.torproject.org/tpo/core/tor/-/work_items/41245"}, {"source": "cve@mitre.org", "url": "https://www.openwall.com/lists/oss-security/2026/05/06/8"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-193"}], "source": "cve@mitre.org", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,0.4.9.7)"}}], "enrichment": {"confidence": 90.0, "confidence_source": "inferred", "scores": [{"score": 90.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Tor", "source": "cna", "vendor": "torproject"}, "product": "tor", "vendor": "torproject"}], "created": "2026-05-07T05:45:06.300595+00:00", "title": "Out-of-Bounds Read in Tor via Malformed BEGIN Cell", "updated": "2026-05-07T05:45:06.663769+00:00", "vendors": ["torproject", "torproject$PRODUCT$tor"]}