diff --git a/Classes/Cache/Listener/NoIntScriptsListener.php b/Classes/Cache/Listener/NoIntScriptsListener.php
index becabd8c8b9..aa90e06190a 100644
--- a/Classes/Cache/Listener/NoIntScriptsListener.php
+++ b/Classes/Cache/Listener/NoIntScriptsListener.php
@@ -6,9 +6,8 @@
 
 use SFC\Staticfilecache\Event\CacheRuleEvent;
 use SFC\Staticfilecache\Service\ConfigurationService;
-use TYPO3\CMS\Core\TypoScript\FrontendTypoScript;
 use TYPO3\CMS\Frontend\Cache\NonceValueSubstitution;
-use TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController;
+use TYPO3\CMS\Frontend\Page\PageParts;
 
 class NoIntScriptsListener
 {
@@ -16,34 +15,43 @@ public function __construct(protected readonly ConfigurationService $configurati
 
     public function __invoke(CacheRuleEvent $event): void
     {
-        $frontendTypoScript = $event->getRequest()->getAttribute('frontend.typoscript');
-        if ($frontendTypoScript instanceof FrontendTypoScript) {
-            $configArray = $frontendTypoScript->getConfigArray();
-            if (isset($configArray['INTincScript']) && is_array($configArray['INTincScript'])) {
-                foreach ($configArray['INTincScript'] as $key => $configuration) {
-
-                    $cspGenerationOverride = (bool) $this->configurationService->get('cspGenerationOverride');
-                    if ($cspGenerationOverride && isset($configuration['target']) && $configuration['target'] === NonceValueSubstitution::class . '->substituteNonce') {
-                        continue;
-                    }
-
-                    $event->addExplanation(__CLASS__ . ':' . $key, 'The page has a INTincScript: ' . implode(', ', $this->getInformation($configuration)));
-                }
+        // @todo PageParts is marked "@internal Experimental, will change" by the TYPO3 core
+        //       and may change during v14/v15 development. Re-check this listener with
+        //       every major TYPO3 update, see Breaking-107831/107578 (TSFE removal series).
+        $pageParts = $event->getRequest()->getAttribute('frontend.page.parts');
+        if (!$pageParts instanceof PageParts) {
+            return;
+        }
+        $cspGenerationOverride = (bool) $this->configurationService->get('cspGenerationOverride');
+        foreach ($pageParts->getNotCachedContentElementRegistry() as $key => $configuration) {
+            if ($cspGenerationOverride
+                && isset($configuration['target'])
+                && $configuration['target'] === NonceValueSubstitution::class . '->substituteNonce'
+            ) {
+                continue;
             }
+
+            $event->addExplanation(
+                __CLASS__ . ':' . $key,
+                'The page has a not-cached content element: ' . implode(', ', $this->getInformation($configuration))
+            );
         }
     }
 
     /**
      * Get the debug information.
      *
-     * @param array $configuration
+     * @param array<string, mixed> $configuration
+     *
+     * @return array<int, string>
      */
-    protected function getInformation($configuration): array
+    protected function getInformation(array $configuration): array
     {
         $info = [];
 
         // Root properties
         foreach ([
+            'substKey',
             'target',
             'type',
         ] as $value) {