CVE-2026-45389
HIGH
7.4
CVSS Score
Published: June 15, 2026 at 12:00 AM UTC
Updated: June 17, 2026 at 09:18 PM UTC
1 product affected across 1 vendorOCaml-TLS
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Severity
HIGH7.4
Exploit prediction
EPSS 0.2%
SSVC
No known exploit
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).
Remediation
No guide yetNo remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.
References (1)
Source: cverecord
https://osv.dev/vulnerability/OSEC-2026-07SSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.4HIGHCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- HIGH
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusDEFERRED
CWE
CWE-295
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