diff --git a/apps/dav/lib/CardDAV/AddressBookImpl.php b/apps/dav/lib/CardDAV/AddressBookImpl.php
index 8657460d0c6b5..11610a5a81549 100644
--- a/apps/dav/lib/CardDAV/AddressBookImpl.php
+++ b/apps/dav/lib/CardDAV/AddressBookImpl.php
@@ -152,6 +152,10 @@ public function getPermissions() {
 		$permissions = $this->addressBook->getACL();
 		$result = 0;
 		foreach ($permissions as $permission) {
+			if ($this->addressBookInfo['principaluri'] !== $permission['principal']) {
+				continue;
+			}
+
 			switch ($permission['privilege']) {
 				case '{DAV:}read':
 					$result |= Constants::PERMISSION_READ;
diff --git a/apps/dav/tests/unit/CardDAV/AddressBookImplTest.php b/apps/dav/tests/unit/CardDAV/AddressBookImplTest.php
index a8bfc1b41fd60..747a4b86338ad 100644
--- a/apps/dav/tests/unit/CardDAV/AddressBookImplTest.php
+++ b/apps/dav/tests/unit/CardDAV/AddressBookImplTest.php
@@ -264,14 +264,15 @@ public function testGetPermissions($permissions, $expected): void {
 	public function dataTestGetPermissions() {
 		return [
 			[[], 0],
-			[[['privilege' => '{DAV:}read']], 1],
-			[[['privilege' => '{DAV:}write']], 6],
-			[[['privilege' => '{DAV:}all']], 31],
-			[[['privilege' => '{DAV:}read'],['privilege' => '{DAV:}write']], 7],
-			[[['privilege' => '{DAV:}read'],['privilege' => '{DAV:}all']], 31],
-			[[['privilege' => '{DAV:}all'],['privilege' => '{DAV:}write']], 31],
-			[[['privilege' => '{DAV:}read'],['privilege' => '{DAV:}write'],['privilege' => '{DAV:}all']], 31],
-			[[['privilege' => '{DAV:}all'],['privilege' => '{DAV:}read'],['privilege' => '{DAV:}write']], 31],
+			[[['privilege' => '{DAV:}read', 'principal' => 'principals/system/system']], 1],
+			[[['privilege' => '{DAV:}read', 'principal' => 'principals/system/system'], ['privilege' => '{DAV:}write', 'principal' => 'principals/someone/else']], 1],
+			[[['privilege' => '{DAV:}write', 'principal' => 'principals/system/system']], 6],
+			[[['privilege' => '{DAV:}all', 'principal' => 'principals/system/system']], 31],
+			[[['privilege' => '{DAV:}read', 'principal' => 'principals/system/system'],['privilege' => '{DAV:}write', 'principal' => 'principals/system/system']], 7],
+			[[['privilege' => '{DAV:}read', 'principal' => 'principals/system/system'],['privilege' => '{DAV:}all', 'principal' => 'principals/system/system']], 31],
+			[[['privilege' => '{DAV:}all', 'principal' => 'principals/system/system'],['privilege' => '{DAV:}write', 'principal' => 'principals/system/system']], 31],
+			[[['privilege' => '{DAV:}read', 'principal' => 'principals/system/system'],['privilege' => '{DAV:}write', 'principal' => 'principals/system/system'],['privilege' => '{DAV:}all', 'principal' => 'principals/system/system']], 31],
+			[[['privilege' => '{DAV:}all', 'principal' => 'principals/system/system'],['privilege' => '{DAV:}read', 'principal' => 'principals/system/system'],['privilege' => '{DAV:}write', 'principal' => 'principals/system/system']], 31],
 		];
 	}