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OSEC-2026-06 TLS-client (with TLS 1.3) does insufficient certificate checks (missing KeyUsage and ExtendedKeyUsage validation)

🗓️ 20 May 2026 13:50:00Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 20 Views

ocaml-tls TLS 1.3 client fails EKU and KeyUsage checks, enabling impersonation with client certificates.

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20 May 2026 14:15Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.4
EPSS0.00225
20