diff --git a/apps/federatedfilesharing/lib/FederatedShareProvider.php b/apps/federatedfilesharing/lib/FederatedShareProvider.php
index 69813289cae38..ea0798445fa1e 100644
--- a/apps/federatedfilesharing/lib/FederatedShareProvider.php
+++ b/apps/federatedfilesharing/lib/FederatedShareProvider.php
@@ -605,8 +605,9 @@ public function getSharesInFolder($userId, Folder $node, $reshares, $shallow = t
 
 		$qb->innerJoin('s', 'filecache', 'f', $qb->expr()->eq('s.file_source', 'f.fileid'));
 
+		$qb->andWhere($qb->expr()->eq('f.storage', $qb->createNamedParameter($node->getMountPoint()->getNumericStorageId(), IQueryBuilder::PARAM_INT)));
 		if ($shallow) {
-			$qb->andWhere($qb->expr()->eq('f.parent', $qb->createNamedParameter($node->getId())));
+			$qb->andWhere($qb->expr()->eq('f.parent', $qb->createNamedParameter($node->getId(), IQueryBuilder::PARAM_INT)));
 		} else {
 			$qb->andWhere($qb->expr()->like('f.path', $qb->createNamedParameter($this->dbConnection->escapeLikeParameter($node->getInternalPath()) . '/%')));
 		}
diff --git a/apps/sharebymail/lib/ShareByMailProvider.php b/apps/sharebymail/lib/ShareByMailProvider.php
index 1c7b716e1e4aa..5a840b895ff02 100644
--- a/apps/sharebymail/lib/ShareByMailProvider.php
+++ b/apps/sharebymail/lib/ShareByMailProvider.php
@@ -1069,6 +1069,7 @@ public function getSharesInFolder($userId, Folder $node, $reshares, $shallow = t
 
 		$qb->innerJoin('s', 'filecache', 'f', $qb->expr()->eq('s.file_source', 'f.fileid'));
 
+		$qb->andWhere($qb->expr()->eq('f.storage', $qb->createNamedParameter($node->getMountPoint()->getNumericStorageId(), IQueryBuilder::PARAM_INT)));
 		if ($shallow) {
 			$qb->andWhere($qb->expr()->eq('f.parent', $qb->createNamedParameter($node->getId())));
 		} else {
diff --git a/lib/private/Share20/DefaultShareProvider.php b/lib/private/Share20/DefaultShareProvider.php
index b4ec16936f354..50196402b4262 100644
--- a/lib/private/Share20/DefaultShareProvider.php
+++ b/lib/private/Share20/DefaultShareProvider.php
@@ -692,17 +692,24 @@ public function getSharesInFolder($userId, Folder $node, $reshares, $shallow = t
 		}, $childMountNodes);
 
 		$qb->innerJoin('s', 'filecache', 'f', $qb->expr()->eq('s.file_source', 'f.fileid'));
+		$storageFilter = $qb->expr()->eq('f.storage', $qb->createNamedParameter($node->getMountPoint()->getNumericStorageId(), IQueryBuilder::PARAM_INT));
 		if ($shallow) {
 			$qb->andWhere(
 				$qb->expr()->orX(
-					$qb->expr()->eq('f.parent', $qb->createNamedParameter($node->getId())),
+					$qb->expr()->andX(
+						$storageFilter,
+						$qb->expr()->eq('f.parent', $qb->createNamedParameter($node->getId())),
+					),
 					$qb->expr()->in('f.fileid', $qb->createParameter('chunk'))
 				)
 			);
 		} else {
 			$qb->andWhere(
 				$qb->expr()->orX(
-					$qb->expr()->like('f.path', $qb->createNamedParameter($this->dbConn->escapeLikeParameter($node->getInternalPath()) . '/%')),
+					$qb->expr()->andX(
+						$storageFilter,
+						$qb->expr()->like('f.path', $qb->createNamedParameter($this->dbConn->escapeLikeParameter($node->getInternalPath()) . '/%')),
+					),
 					$qb->expr()->in('f.fileid', $qb->createParameter('chunk'))
 				)
 			);