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CVE-2026-45388

CRITICAL CVSS 9.1 View on NVD ↗

Description

In OCaml-TLS before 2.1.0, the client implementation does insufficient checks of the certificate provided by the server, which allows impersonation with certificates that are not meant for server authentication (because of KeyUsage and ExtendedKeyUsage).

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Published: Jun 15, 2026 20:16 UTC Modified: Jun 16, 2026 15:35 UTC