VULNERABILITY INTELLIGENCE
CVE-2026-45388
CVSS score9.1 CRITICAL
EPSS probability0.22%
CISA KEVNot currently listed
Published2026-06-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
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 classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-295