diff --git a/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObject.php b/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObject.php
index 79128a72402ca..f622cb439952d 100644
--- a/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObject.php
+++ b/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObject.php
@@ -105,7 +105,17 @@ public function getACL(): array {
 			],
 			[
 				'privilege' => '{DAV:}unbind', // For moving and deletion
-				'principal' => '{DAV:}owner',
+				'principal' => $this->getOwner(),
+				'protected' => true,
+			],
+			[
+				'privilege' => '{DAV:}all',
+				'principal' => $this->getOwner() . '/calendar-proxy-write',
+				'protected' => true,
+			],
+			[
+				'privilege' => '{DAV:}read',
+				'principal' => $this->getOwner() . '/calendar-proxy-read',
 				'protected' => true,
 			],
 		];
diff --git a/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObjectsCollection.php b/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObjectsCollection.php
index 01d806d006c1b..d853ed773f3d3 100644
--- a/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObjectsCollection.php
+++ b/apps/dav/lib/CalDAV/Trashbin/DeletedCalendarObjectsCollection.php
@@ -137,9 +137,24 @@ public function getACL(): array {
 			],
 			[
 				'privilege' => '{DAV:}unbind',
-				'principal' => '{DAV:}owner',
+				'principal' => $this->getOwner(),
+				'protected' => true,
+			],
+			[
+				'privilege' => '{DAV:}read',
+				'principal' => $this->getOwner() . '/calendar-proxy-write',
+				'protected' => true,
+			],
+			[
+				'privilege' => '{DAV:}unbind',
+				'principal' => $this->getOwner() . '/calendar-proxy-write',
 				'protected' => true,
-			]
+			],
+			[
+				'privilege' => '{DAV:}read',
+				'principal' => $this->getOwner() . '/calendar-proxy-read',
+				'protected' => true,
+			],
 		];
 	}
 }
diff --git a/apps/dav/lib/CalDAV/Trashbin/TrashbinHome.php b/apps/dav/lib/CalDAV/Trashbin/TrashbinHome.php
index 568831c2b373f..bd4bdfda76375 100644
--- a/apps/dav/lib/CalDAV/Trashbin/TrashbinHome.php
+++ b/apps/dav/lib/CalDAV/Trashbin/TrashbinHome.php
@@ -37,6 +37,28 @@ public function getOwner(): string {
 		return $this->principalInfo['uri'];
 	}
 
+	#[\Override]
+	public function getACL(): array {
+		$ownerPrincipal = $this->principalInfo['uri'];
+		return [
+			[
+				'privilege' => '{DAV:}all',
+				'principal' => $ownerPrincipal,
+				'protected' => true,
+			],
+			[
+				'privilege' => '{DAV:}all',
+				'principal' => $ownerPrincipal . '/calendar-proxy-write',
+				'protected' => true,
+			],
+			[
+				'privilege' => '{DAV:}read',
+				'principal' => $ownerPrincipal . '/calendar-proxy-read',
+				'protected' => true,
+			],
+		];
+	}
+
 	#[\Override]
 	public function createFile($name, $data = null) {
 		throw new Forbidden('Permission denied to create files in the trashbin');