CVE-2026-55953 | Erlang OTP prior 27.3.4.15/28.5.0.4/29.0.4 Client Handshake ssl_handshake:handle_server_hello_extensions/9 certificate validation

July 27, 2026 Yanac

A vulnerability was found in Erlang OTP. It has been classified as problematic. This affects the function ssl_handshake:handle_server_hello_extensions/9 of the component Client Handshake. This manipulation causes improper certificate validation.

The identification of this vulnerability is CVE-2026-55953. It is possible to initiate the attack remotely. There is no exploit available.

Upgrading the affected component is recommended.VulDB Recent EntriesRead More