CVE-2026-74876 [CRITICAL] – openssl_encrypt versions before 1.4.0 contain a vulnerability in PublicKeyBundle.from_dict

openssl_encrypt versions before 1.4.0 contain a vulnerability in PublicKeyBundle.from_dict() that creates key bundles from untrusted data without verifying signatures. Attackers can call from_dict() followed by to_identity() without signature verification to encrypt data using attacker-controlled public keys, leaking secrets.