diff --git a/src/wp-includes/comment-template.php b/src/wp-includes/comment-template.php
index 104293b1bc..453a9ae5bf 100644
--- a/src/wp-includes/comment-template.php
+++ b/src/wp-includes/comment-template.php
@@ -596,8 +596,13 @@ function comment_date( $format = '', $comment_ID = 0 ) {
  * @return string The possibly truncated comment excerpt.
  */
 function get_comment_excerpt( $comment_ID = 0 ) {
-	$comment      = get_comment( $comment_ID );
-	$comment_text = strip_tags( str_replace( array( "\n", "\r" ), ' ', $comment->comment_content ) );
+	$comment = get_comment( $comment_ID );
+
+	if ( ! post_password_required( $comment->comment_post_ID ) ) {
+		$comment_text = strip_tags( str_replace( array( "\n", "\r" ), ' ', $comment->comment_content ) );
+	} else {
+		$comment_text = __( 'Password protected' );
+	}
 
 	/* translators: Maximum number of words used in a comment excerpt. */
 	$comment_excerpt_length = intval( _x( '20', 'comment_excerpt_length' ) );
diff --git a/tests/phpunit/tests/blocks/render.php b/tests/phpunit/tests/blocks/render.php
index ab16b498d8..9ca2d4fea9 100644
--- a/tests/phpunit/tests/blocks/render.php
+++ b/tests/phpunit/tests/blocks/render.php
@@ -289,6 +289,24 @@ class WP_Test_Block_Render extends WP_UnitTestCase {
 		$this->assertEquals( $global_post, $post );
 	}
 
+	public function test_render_latest_comments_on_password_protected_post() {
+		$post_id      = self::factory()->post->create(
+			array(
+				'post_password' => 'password',
+			)
+		);
+		$comment_text = wp_generate_password( 10, false );
+		self::factory()->comment->create(
+			array(
+				'comment_post_ID' => $post_id,
+				'comment_content' => $comment_text,
+			)
+		);
+		$comments = do_blocks( '<!-- wp:latest-comments {"commentsToShow":1,"displayExcerpt":true} /-->' );
+
+		$this->assertNotContains( $comment_text, $comments );
+	}
+
 	/**
 	 * @ticket 45109
 	 */