CVE-2026-45388

CVSS 9.1 CRITICALEPSS 0.2%CWE-295

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.1EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

15 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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).

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

n/a · n/a

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References

https://osv.dev/vulnerability/OSEC-2026-06