diff --git a/apps/files_sharing/composer/composer/autoload_classmap.php b/apps/files_sharing/composer/composer/autoload_classmap.php
index 919241be141..f087686c4ca 100644
--- a/apps/files_sharing/composer/composer/autoload_classmap.php
+++ b/apps/files_sharing/composer/composer/autoload_classmap.php
@@ -45,6 +45,7 @@ return array(
     'OCA\\Files_Sharing\\Event\\BeforeTemplateRenderedEvent' => $baseDir . '/../lib/Event/BeforeTemplateRenderedEvent.php',
     'OCA\\Files_Sharing\\Event\\ShareLinkAccessedEvent' => $baseDir . '/../lib/Event/ShareLinkAccessedEvent.php',
     'OCA\\Files_Sharing\\Event\\ShareMountedEvent' => $baseDir . '/../lib/Event/ShareMountedEvent.php',
+    'OCA\\Files_Sharing\\Event\\UserShareAccessUpdatedEvent' => $baseDir . '/../lib/Event/UserShareAccessUpdatedEvent.php',
     'OCA\\Files_Sharing\\Exceptions\\BrokenPath' => $baseDir . '/../lib/Exceptions/BrokenPath.php',
     'OCA\\Files_Sharing\\Exceptions\\S2SException' => $baseDir . '/../lib/Exceptions/S2SException.php',
     'OCA\\Files_Sharing\\Exceptions\\SharingRightsException' => $baseDir . '/../lib/Exceptions/SharingRightsException.php',
diff --git a/apps/files_sharing/composer/composer/autoload_static.php b/apps/files_sharing/composer/composer/autoload_static.php
index 6a22d082df1..c39bd4d677a 100644
--- a/apps/files_sharing/composer/composer/autoload_static.php
+++ b/apps/files_sharing/composer/composer/autoload_static.php
@@ -60,6 +60,7 @@ class ComposerStaticInitFiles_Sharing
         'OCA\\Files_Sharing\\Event\\BeforeTemplateRenderedEvent' => __DIR__ . '/..' . '/../lib/Event/BeforeTemplateRenderedEvent.php',
         'OCA\\Files_Sharing\\Event\\ShareLinkAccessedEvent' => __DIR__ . '/..' . '/../lib/Event/ShareLinkAccessedEvent.php',
         'OCA\\Files_Sharing\\Event\\ShareMountedEvent' => __DIR__ . '/..' . '/../lib/Event/ShareMountedEvent.php',
+        'OCA\\Files_Sharing\\Event\\UserShareAccessUpdatedEvent' => __DIR__ . '/..' . '/../lib/Event/UserShareAccessUpdatedEvent.php',
         'OCA\\Files_Sharing\\Exceptions\\BrokenPath' => __DIR__ . '/..' . '/../lib/Exceptions/BrokenPath.php',
         'OCA\\Files_Sharing\\Exceptions\\S2SException' => __DIR__ . '/..' . '/../lib/Exceptions/S2SException.php',
         'OCA\\Files_Sharing\\Exceptions\\SharingRightsException' => __DIR__ . '/..' . '/../lib/Exceptions/SharingRightsException.php',
diff --git a/apps/files_sharing/lib/Event/UserShareAccessUpdatedEvent.php b/apps/files_sharing/lib/Event/UserShareAccessUpdatedEvent.php
new file mode 100644
index 00000000000..a89ad566d4a
--- /dev/null
+++ b/apps/files_sharing/lib/Event/UserShareAccessUpdatedEvent.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Files_Sharing\Event;
+
+use OCP\EventDispatcher\Event;
+use OCP\IUser;
+
+/**
+ * Emitted when a user *might* have gained or lost access to an existing share.
+ *
+ * For example, when a user is added to a group, they gain access to all shares for the group.
+ *
+ * @since 33.0.0
+ */
+class UserShareAccessUpdatedEvent extends Event {
+	public function __construct(
+		private readonly IUser $user,
+	) {
+		parent::__construct();
+	}
+
+	public function getUser(): IUser {
+		return $this->user;
+	}
+}