static int ssl_security_cert_key(SSL *s, SSL_CTX *ctx, X509 *x, int op)
{
    int secbits = -1;
    EVP_PKEY *pkey = X509_get0_pubkey(x);
    if (pkey) {
        /*
         * If no parameters this will return -1 and fail using the default
         * security callback for any non-zero security level. This will
         * reject keys which omit parameters but this only affects DSA and
         * omission of parameters is never (?) done in practice.
         */
        secbits = EVP_PKEY_security_bits(pkey);
    }
    if (s)
        return ssl_security(s, op, secbits, 0, x);
    else
        return ssl_ctx_security(ctx, op, secbits, 0, x);
}

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.