{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-67693", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-10-08T18:51:16.356Z", "dateReserved": "2026-07-30T00:00:00.000Z", "datePublished": "2026-10-08T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-10-08T18:51:16.356Z"}, "descriptions": [{"lang": "en", "value": "An issue in gnutls v.3.8.13 allows an attacker to obtain sensitive information via failing to reject end-entity X.509 certificates that contain a contradictory combination of Key Usage (KU) and Extended Key Usage (EKU)"}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "http://gnutls.com"}, {"url": "https://gitlab.com/gnutls/gnutls/-/blob/3.8.13/lib/x509/verify.c#L1119-1178"}, {"url": "https://gist.github.com/lkloliver/6fbfc191bc6163942c8017551ac3f238"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}}, "dataVersion": "5.2"}

{}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue in gnutls v.3.8.13 allows an attacker to obtain sensitive information via failing to reject end-entity X.509 certificates that contain a contradictory combination of Key Usage (KU) and Extended Key Usage (EKU)"}], "id": "CVE-2026-67693", "lastModified": "2026-10-08T21:33:42.423", "metrics": {}, "published": "2026-10-08T19:18:41.280", "references": [{"source": "cve@mitre.org", "url": "http://gnutls.com"}, {"source": "cve@mitre.org", "url": "https://gist.github.com/lkloliver/6fbfc191bc6163942c8017551ac3f238"}, {"source": "cve@mitre.org", "url": "https://gitlab.com/gnutls/gnutls/-/blob/3.8.13/lib/x509/verify.c#L1119-1178"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Awaiting Analysis"}

{}

{"created": "2026-10-08T21:00:14.223576+00:00", "title": "Certificate Validation Failure Allows Sensitive Information Disclosure in gnutls 3.8.13", "updated": "2026-10-08T21:00:14.223581+00:00", "vendors": [], "weaknesses": ["CWE-749", "CWE-332"]}