update

wp-content/plugins/contact-form-7/modules/recaptcha/index.js

@@ -1 +1 @@
-document.addEventListener("DOMContentLoaded",(t=>{var e;wpcf7_recaptcha={...null!==(e=wpcf7_recaptcha)&&void 0!==e?e:{}};const c=wpcf7_recaptcha.sitekey,{homepage:n,contactform:a}=wpcf7_recaptcha.actions,o=t=>{const{action:e,func:n,params:a}=t;grecaptcha.execute(c,{action:e}).then((t=>{const c=new CustomEvent("wpcf7grecaptchaexecuted",{detail:{action:e,token:t}});document.dispatchEvent(c)})).then((()=>{"function"==typeof n&&n(...a)})).catch((t=>console.error(t)))};if(grecaptcha.ready((()=>{o({action:n})})),document.addEventListener("change",(t=>{o({action:a})})),"undefined"!=typeof wpcf7&&"function"==typeof wpcf7.submit){const t=wpcf7.submit;wpcf7.submit=function(e){o({action:a,func:t,params:[e,arguments.length>1&&void 0!==arguments[1]?arguments[1]:{}]})}}document.addEventListener("wpcf7grecaptchaexecuted",(t=>{const e=document.querySelectorAll('form.wpcf7-form input[name="_wpcf7_recaptcha_response"]');for(let c=0;c<e.length;c++)e[c].setAttribute("value",t.detail.token)}))}));
+document.addEventListener("DOMContentLoaded",(e=>{var t;wpcf7_recaptcha={...null!==(t=wpcf7_recaptcha)&&void 0!==t?t:{}};const c=wpcf7_recaptcha.sitekey,{homepage:n,contactform:a}=wpcf7_recaptcha.actions,o=e=>{const{action:t,func:n,params:a}=e;grecaptcha.execute(c,{action:t}).then((e=>{const c=new CustomEvent("wpcf7grecaptchaexecuted",{detail:{action:t,token:e}});document.dispatchEvent(c)})).then((()=>{"function"==typeof n&&n(...a)})).catch((e=>console.error(e)))};if(grecaptcha.ready((()=>{o({action:n})})),document.addEventListener("change",(e=>{o({action:a})})),"undefined"!=typeof wpcf7&&"function"==typeof wpcf7.submit){const e=wpcf7.submit;wpcf7.submit=(t,c={})=>{o({action:a,func:e,params:[t,c]})}}document.addEventListener("wpcf7grecaptchaexecuted",(e=>{const t=document.querySelectorAll('form.wpcf7-form input[name="_wpcf7_recaptcha_response"]');for(let c=0;c<t.length;c++)t[c].setAttribute("value",e.detail.token)}))}));

wp-content/plugins/contact-form-7/modules/recaptcha/recaptcha.php

@@ -53,7 +53,7 @@ function wpcf7_recaptcha_enqueue_scripts() {
 		),
 		array(),
 		'3.0',
-		true
+		array( 'in_footer' => true )
 	);
 
 	$assets = array();
@@ -79,7 +79,7 @@ function wpcf7_recaptcha_enqueue_scripts() {
 			)
 		),
 		$assets['version'],
-		true
+		array( 'in_footer' => true )
 	);
 
 	wp_enqueue_script( 'wpcf7-recaptcha' );
@@ -135,8 +135,7 @@ function wpcf7_recaptcha_verify_response( $spam, $submission ) {
 		return $spam;
 	}
 
-	$token = isset( $_POST['_wpcf7_recaptcha_response'] )
-		? trim( $_POST['_wpcf7_recaptcha_response'] ) : '';
+	$token = trim( $_POST['_wpcf7_recaptcha_response'] ?? '' );
 
 	if ( $service->verify( $token ) ) { // Human
 		$spam = false;

wp-content/plugins/contact-form-7/modules/recaptcha/service.php

@@ -133,6 +133,10 @@ class WPCF7_RECAPTCHA extends WPCF7_Service {
 
 		$endpoint = 'https://www.google.com/recaptcha/api/siteverify';
 
+		if ( apply_filters( 'wpcf7_use_recaptcha_net', false ) ) {
+			$endpoint = 'https://www.recaptcha.net/recaptcha/api/siteverify';
+		}
+
 		$sitekey = $this->get_sitekey();
 		$secret = $this->get_secret( $sitekey );
 
@@ -221,8 +225,8 @@ class WPCF7_RECAPTCHA extends WPCF7_Service {
 				$this->reset_data();
 				$redirect_to = $this->menu_page_url( 'action=setup' );
 			} else {
-				$sitekey = isset( $_POST['sitekey'] ) ? trim( $_POST['sitekey'] ) : '';
-				$secret = isset( $_POST['secret'] ) ? trim( $_POST['secret'] ) : '';
+				$sitekey = trim( $_POST['sitekey'] ?? '' );
+				$secret = trim( $_POST['secret'] ?? '' );
 
 				if ( $sitekey and $secret ) {
 					$this->sitekeys = array( $sitekey => $secret );