Critical severity9.1NVD Advisory· Published Jun 15, 2026· Updated Jun 16, 2026
CVE-2026-45388
CVE-2026-45388
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).
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Affected products
2Patches
Vulnerability mechanics
References
1News mentions
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