{"id":"CVE-2026-33811","revision":"81404e3caeca47d8a9889316588f31e0","records":[{"revision":"81404e3caeca47d8a9889316588f31e0","observedAt":"2026-10-27T09:02:55.767+00:00","statement":{"source":"nvd","id":"CVE-2026-33811","aliases":[],"title":"When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.","description":"When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.","state":0,"publishedAt":"2026-05-07T20:16:42.77+00:00","modifiedAt":"2026-10-26T00:10:00.15+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"},{"system":"CVSS 3.1 · 134c704f-9b21-4f2e-91b3-4a467353bcc0 · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"},{"system":"CVSS 3.1 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c · 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NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Modified","weaknesses":["CWE-415","CWE-1341"],"productCriteria":["cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-05-07T20:16:42.770","lastModified":"2026-10-26T00:10:00.150"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. 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