{"id":"CVE-2026-89134","published":"2026-09-27T10:16:59.030","lastModified":"2026-09-29T17:17:12.493","description":"A certificate with no dNSName SAN but another SAN type present (e.g. registeredID or iPAddress) bypassed the Subject CN dNSName name-constraint check. The CN-as-DNS fallback was gated on cert->subjectCN != NULL && cert->altNames == NULL && !cert->isCA instead of \"no dNSName SAN\", so an out-of-scope CN was accepted. This incomplete fix from CVE-2026-6731, leading to the name-constraint check issue, was introduced in wolfSSL version 5.9.2.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-295"],"vendors":[],"products":[],"references":[{"url":"https://github.com/wolfSSL/wolfssl/pull/10837","tags":[]}],"exploitRefs":[{"url":"https://github.com/wolfSSL/wolfssl/pull/10837","tags":[]}],"hasPoc":true,"ai":null}