{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-45389/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-16T13:56:44.473Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-45389","@id":"https://www.cve.org/CVERecord?id=CVE-2026-45389","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)."},"products":[{"@id":"cpe:2.3:a:n\\/a:n\\/a:n\\/a:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:n\\/a:n\\/a:n\\/a:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"No fixed version is published yet; monitor the upstream advisory.","timestamp":"2026-06-16T13:56:44.473Z"}]}