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).
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://osv.dev/vulnerability/OSEC-2026-06 |
|
History
Thu, 18 Jun 2026 04:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | OCaml‑TLS Insufficient Certificate Validation Enables Server Impersonation |
Wed, 17 Jun 2026 05:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | OCaml‑TLS Insufficient Certificate Validation Enables Server Impersonation |
Tue, 16 Jun 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-295 | |
| Metrics |
cvssV3_1
|
Tue, 16 Jun 2026 14:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Ocaml
Ocaml ocaml |
|
| Vendors & Products |
Ocaml
Ocaml ocaml |
Mon, 15 Jun 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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). | |
| References |
|
Status: PUBLISHED
Assigner: mitre
Published: 2026-06-15T00:00:00.000Z
Updated: 2026-06-16T13:57:42.571Z
Reserved: 2026-05-12T00:00:00.000Z
Link: CVE-2026-45388
Updated: 2026-06-16T13:52:20.350Z
Status : Deferred
Published: 2026-06-15T20:16:28.350
Modified: 2026-06-16T15:35:16.600
Link: CVE-2026-45388
No data.