What is CVE-2026-45389?

CVE-2026-45389 is a high-severity vulnerability in N/a, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2026-06-15.

How severe is CVE-2026-45389?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in N/a

CVE-2026-45389

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 authenti…

Vulnerability class: Improper Certificate Validation

EPSS: 0.002 (9.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

N/a — versions n/a

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

cve@mitre.org

Frequently asked questions

What is CVE-2026-45389?: CVE-2026-45389 is a high-severity vulnerability in N/a, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2026-06-15.
How severe is CVE-2026-45389?: High severity. CVSS v3 base score is 7.4 out of 10.