{"id":"CVE-2025-61727","revision":"d2d34b15f97c422baedbfad5ff66e2c4","records":[{"revision":"d2d34b15f97c422baedbfad5ff66e2c4","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-61727","aliases":[],"title":"Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509","description":"An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN *.example.com.","state":0,"publishedAt":"2025-12-03T19:37:15.054+00:00","modifiedAt":"2025-12-03T22:06:17.007+00:00","affected":[{"ecosystem":"https://pkg.go.dev","name":"crypto/x509","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Go standard library\",\n                    \"product\": \"crypto/x509\",\n                    \"collectionURL\": \"https://pkg.go.dev\",\n                    \"packageName\": \"crypto/x509\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"1.24.11\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"1.25.0\",\n                            \"lessThan\": \"1.25.5\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"programRoutines\": [\n                        {\n                            \"name\": \"Certificate.Verify\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[],"references":["https://go.dev/cl/723900","https://go.dev/issue/76442","https://groups.google.com/g/golang-announce/c/8FJoBkPddm4","https://pkg.go.dev/vuln/GO-2025-4175"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-61727","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-61727","identifiers":["CVE-2025-61727"]},"retained":false,"historicalAffected":[]}],"coverage":[]}