diff --git a/apps/dav/lib/CalDAV/Calendar.php b/apps/dav/lib/CalDAV/Calendar.php
index f7de4cbdaef82..61bb499529d7e 100644
--- a/apps/dav/lib/CalDAV/Calendar.php
+++ b/apps/dav/lib/CalDAV/Calendar.php
@@ -340,6 +340,11 @@ public function childExists($name) {
 
 	#[\Override]
 	public function calendarQuery(array $filters) {
+		// Objects of a calendar in the trash bin must not be matched, e.g. in free-busy reports
+		if ($this->isDeleted()) {
+			return [];
+		}
+
 		$uris = $this->caldavBackend->calendarQuery($this->calendarInfo['id'], $filters, $this->getCalendarType());
 		if ($this->isShared()) {
 			return array_filter($uris, function ($uri) {
diff --git a/apps/dav/lib/CalDAV/CalendarImpl.php b/apps/dav/lib/CalDAV/CalendarImpl.php
index 63abfc4cdad17..6335e91db005a 100644
--- a/apps/dav/lib/CalDAV/CalendarImpl.php
+++ b/apps/dav/lib/CalDAV/CalendarImpl.php
@@ -112,6 +112,11 @@ public function getSchedulingTimezone(): ?VTimeZone {
 
 	#[\Override]
 	public function search(string $pattern, array $searchProperties = [], array $options = [], $limit = null, $offset = null): array {
+		// Objects of a calendar in the trash bin must not be matched, e.g. when calculating the user status
+		if ($this->isDeleted()) {
+			return [];
+		}
+
 		return $this->backend->search($this->calendarInfo, $pattern,
 			$searchProperties, $options, $limit, $offset);
 	}
diff --git a/apps/dav/tests/unit/CalDAV/CalendarImplTest.php b/apps/dav/tests/unit/CalDAV/CalendarImplTest.php
index 03978ad6cfc86..39d0237c39db4 100644
--- a/apps/dav/tests/unit/CalDAV/CalendarImplTest.php
+++ b/apps/dav/tests/unit/CalDAV/CalendarImplTest.php
@@ -95,6 +95,16 @@ public function testSearch(): void {
 		$this->assertEquals($result, ['SEARCHRESULTS']);
 	}
 
+	public function testSearchDeletedCalendar(): void {
+		$this->calendar->expects($this->once())
+			->method('isDeleted')
+			->willReturn(true);
+		$this->backend->expects($this->never())
+			->method('search');
+
+		$this->assertEquals([], $this->calendarImpl->search('abc'));
+	}
+
 	public function testGetPermissionRead(): void {
 		$this->calendar->expects($this->once())
 			->method('getACL')
diff --git a/apps/dav/tests/unit/CalDAV/CalendarTest.php b/apps/dav/tests/unit/CalDAV/CalendarTest.php
index 2509996dd171e..1ba4d0d5a2f68 100644
--- a/apps/dav/tests/unit/CalDAV/CalendarTest.php
+++ b/apps/dav/tests/unit/CalDAV/CalendarTest.php
@@ -12,6 +12,7 @@
 use OCA\DAV\CalDAV\BirthdayService;
 use OCA\DAV\CalDAV\CalDavBackend;
 use OCA\DAV\CalDAV\Calendar;
+use OCA\DAV\CalDAV\Trashbin\Plugin as TrashbinPlugin;
 use OCP\IConfig;
 use OCP\IL10N;
 use PHPUnit\Framework\MockObject\MockObject;
@@ -451,6 +452,69 @@ public static function providesConfidentialClassificationData(): array {
 		];
 	}
 
+	public function testCalendarQuery(): void {
+		/** @var CalDavBackend&MockObject $backend */
+		$backend = $this->createMock(CalDavBackend::class);
+		$backend->expects($this->once())
+			->method('calendarQuery')
+			->with(666, [], CalDavBackend::CALENDAR_TYPE_CALENDAR)
+			->willReturn(['event-0.ics']);
+
+		// A calendar that is not in the trash bin has the property set to null
+		$calendarInfo = [
+			'principaluri' => 'user1',
+			'id' => 666,
+			'uri' => 'cal',
+			TrashbinPlugin::PROPERTY_DELETED_AT => null,
+		];
+		$c = new Calendar($backend, $calendarInfo, $this->l10n, $this->config, $this->logger);
+
+		$this->assertEquals(['event-0.ics'], $c->calendarQuery([]));
+	}
+
+	public function testCalendarQuerySharedCalendar(): void {
+		/** @var CalDavBackend&MockObject $backend */
+		$backend = $this->createMock(CalDavBackend::class);
+		$backend->expects($this->once())
+			->method('calendarQuery')
+			->with(666, [], CalDavBackend::CALENDAR_TYPE_CALENDAR)
+			->willReturn(['event-public.ics', 'event-private.ics']);
+		$backend->expects($this->any())
+			->method('getCalendarObject')
+			->willReturnMap([
+				[666, 'event-public.ics', CalDavBackend::CALENDAR_TYPE_CALENDAR, ['uri' => 'event-public.ics', 'classification' => CalDavBackend::CLASSIFICATION_PUBLIC]],
+				[666, 'event-private.ics', CalDavBackend::CALENDAR_TYPE_CALENDAR, ['uri' => 'event-private.ics', 'classification' => CalDavBackend::CLASSIFICATION_PRIVATE]],
+			]);
+
+		$calendarInfo = [
+			'{http://owncloud.org/ns}owner-principal' => 'user1',
+			'principaluri' => 'user2',
+			'id' => 666,
+			'uri' => 'cal',
+			TrashbinPlugin::PROPERTY_DELETED_AT => null,
+		];
+		$c = new Calendar($backend, $calendarInfo, $this->l10n, $this->config, $this->logger);
+
+		$this->assertEquals(['event-public.ics'], $c->calendarQuery([]));
+	}
+
+	public function testCalendarQueryDeletedCalendar(): void {
+		/** @var CalDavBackend&MockObject $backend */
+		$backend = $this->createMock(CalDavBackend::class);
+		$backend->expects($this->never())
+			->method('calendarQuery');
+
+		$calendarInfo = [
+			'principaluri' => 'user1',
+			'id' => 666,
+			'uri' => 'cal',
+			TrashbinPlugin::PROPERTY_DELETED_AT => 1234567890,
+		];
+		$c = new Calendar($backend, $calendarInfo, $this->l10n, $this->config, $this->logger);
+
+		$this->assertEquals([], $c->calendarQuery([]));
+	}
+
 	public function testRemoveVAlarms(): void {
 		$publicObjectData = <<<EOD
 BEGIN:VCALENDAR