CVE-2026-45388

—

CVSS 3.1

9.1 critical

EPSS

<1%p13

Published

Jun 15, 2026 (Jun 15, 2026)

Modified

Jun 17, 2026

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).

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

NVD CVE.org GitHub PoCs EPSS (0.2%)

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