CVE-2026-45389

—

CVSS 3.1

7.4 high

EPSS

<1%p9

Published

Jun 15, 2026 (Jun 15, 2026)

Modified

Jun 17, 2026

Description

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

Weakness: CWE-295
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

NVD CVE.org GitHub PoCs EPSS (0.2%)

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