diff --git a/apps/dav/appinfo/info.xml b/apps/dav/appinfo/info.xml
index a82e389b50792..e592f3eb3ff4e 100644
--- a/apps/dav/appinfo/info.xml
+++ b/apps/dav/appinfo/info.xml
@@ -10,7 +10,7 @@
 	<name>WebDAV</name>
 	<summary>WebDAV endpoint</summary>
 	<description>WebDAV endpoint</description>
-	<version>3.0.0-dev.2</version>
+	<version>3.0.0-dev.3</version>
 	<licence>agpl</licence>
 	<author>owncloud.org</author>
 	<namespace>DAV</namespace>
diff --git a/apps/dav/composer/composer/autoload_classmap.php b/apps/dav/composer/composer/autoload_classmap.php
index 9af252d67a7e2..e3a9319d8f8e8 100644
--- a/apps/dav/composer/composer/autoload_classmap.php
+++ b/apps/dav/composer/composer/autoload_classmap.php
@@ -423,6 +423,7 @@
     'OCA\\DAV\\Migration\\Version1039Date20260408000001' => $baseDir . '/../lib/Migration/Version1039Date20260408000001.php',
     'OCA\\DAV\\Migration\\Version1040Date20260805000000' => $baseDir . '/../lib/Migration/Version1040Date20260805000000.php',
     'OCA\\DAV\\Migration\\Version3000Date20260828000000' => $baseDir . '/../lib/Migration/Version3000Date20260828000000.php',
+    'OCA\\DAV\\Migration\\Version3000Date20261112000000' => $baseDir . '/../lib/Migration/Version3000Date20261112000000.php',
     'OCA\\DAV\\Model\\ExampleEvent' => $baseDir . '/../lib/Model/ExampleEvent.php',
     'OCA\\DAV\\Paginate\\LimitedCopyIterator' => $baseDir . '/../lib/Paginate/LimitedCopyIterator.php',
     'OCA\\DAV\\Paginate\\PaginateCache' => $baseDir . '/../lib/Paginate/PaginateCache.php',
diff --git a/apps/dav/composer/composer/autoload_static.php b/apps/dav/composer/composer/autoload_static.php
index 5321ae3251029..d44afb55462a2 100644
--- a/apps/dav/composer/composer/autoload_static.php
+++ b/apps/dav/composer/composer/autoload_static.php
@@ -438,6 +438,7 @@ class ComposerStaticInitDAV
         'OCA\\DAV\\Migration\\Version1039Date20260408000001' => __DIR__ . '/..' . '/../lib/Migration/Version1039Date20260408000001.php',
         'OCA\\DAV\\Migration\\Version1040Date20260805000000' => __DIR__ . '/..' . '/../lib/Migration/Version1040Date20260805000000.php',
         'OCA\\DAV\\Migration\\Version3000Date20260828000000' => __DIR__ . '/..' . '/../lib/Migration/Version3000Date20260828000000.php',
+        'OCA\\DAV\\Migration\\Version3000Date20261112000000' => __DIR__ . '/..' . '/../lib/Migration/Version3000Date20261112000000.php',
         'OCA\\DAV\\Model\\ExampleEvent' => __DIR__ . '/..' . '/../lib/Model/ExampleEvent.php',
         'OCA\\DAV\\Paginate\\LimitedCopyIterator' => __DIR__ . '/..' . '/../lib/Paginate/LimitedCopyIterator.php',
         'OCA\\DAV\\Paginate\\PaginateCache' => __DIR__ . '/..' . '/../lib/Paginate/PaginateCache.php',
diff --git a/apps/dav/lib/CalDAV/CalDavBackend.php b/apps/dav/lib/CalDAV/CalDavBackend.php
index c32538c82e4a6..ad904095bf78d 100644
--- a/apps/dav/lib/CalDAV/CalDavBackend.php
+++ b/apps/dav/lib/CalDAV/CalDavBackend.php
@@ -189,7 +189,8 @@ class CalDavBackend extends AbstractBackend implements SyncSupport, Subscription
 		'SUMMARY',
 		'ATTENDEE',
 		'CONTACT',
-		'ORGANIZER'
+		'ORGANIZER',
+		'CONFERENCE',
 	];
 
 	/** @var array parameters to index */
diff --git a/apps/dav/lib/Migration/BuildCalendarSearchIndexBackgroundJob.php b/apps/dav/lib/Migration/BuildCalendarSearchIndexBackgroundJob.php
index fc6680fb11320..baca447fb19d5 100644
--- a/apps/dav/lib/Migration/BuildCalendarSearchIndexBackgroundJob.php
+++ b/apps/dav/lib/Migration/BuildCalendarSearchIndexBackgroundJob.php
@@ -31,12 +31,13 @@ public function __construct(
 	public function run($argument) {
 		$offset = (int)$argument['offset'];
 		$stopAt = (int)$argument['stopAt'];
+		$property = $argument['property'] ?? null;
 
 		$this->logger->info('Building calendar index (' . $offset . '/' . $stopAt . ')');
 
 		$startTime = $this->time->getTime();
 		while (($this->time->getTime() - $startTime) < 15) {
-			$offset = $this->buildIndex($offset, $stopAt);
+			$offset = $this->buildIndex($offset, $stopAt, $property);
 			if ($offset >= $stopAt) {
 				break;
 			}
@@ -47,7 +48,8 @@ public function run($argument) {
 		} else {
 			$this->jobList->add(self::class, [
 				'offset' => $offset,
-				'stopAt' => $stopAt
+				'stopAt' => $stopAt,
+				'property' => $property,
 			]);
 			$this->logger->info('New building calendar index job scheduled with offset ' . $offset);
 		}
@@ -56,11 +58,12 @@ public function run($argument) {
 	/**
 	 * @param int $offset
 	 * @param int $stopAt
+	 * @param string|null $property only reindex objects whose data contains this property name
 	 * @return int
 	 */
-	private function buildIndex(int $offset, int $stopAt): int {
+	private function buildIndex(int $offset, int $stopAt, ?string $property): int {
 		$query = $this->db->getQueryBuilder();
-		$query->select(['id', 'calendarid', 'uri', 'calendardata'])
+		$query->select(['id', 'calendarid', 'calendartype', 'uri', 'calendardata'])
 			->from('calendarobjects')
 			->where($query->expr()->lte('id', $query->createNamedParameter($stopAt)))
 			->andWhere($query->expr()->gt('id', $query->createNamedParameter($offset)))
@@ -76,7 +79,11 @@ private function buildIndex(int $offset, int $stopAt): int {
 				$calendarData = stream_get_contents($calendarData);
 			}
 
-			$this->calDavBackend->updateProperties($row['calendarid'], $row['uri'], $calendarData);
+			if ($property !== null && stripos($calendarData, $property) === false) {
+				continue;
+			}
+
+			$this->calDavBackend->updateProperties($row['calendarid'], $row['uri'], $calendarData, (int)$row['calendartype']);
 		}
 
 		return $offset;
diff --git a/apps/dav/lib/Migration/Version3000Date20261112000000.php b/apps/dav/lib/Migration/Version3000Date20261112000000.php
new file mode 100644
index 0000000000000..3b0f472622863
--- /dev/null
+++ b/apps/dav/lib/Migration/Version3000Date20261112000000.php
@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2026 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\DAV\Migration;
+
+use Closure;
+use OCP\BackgroundJob\IJobList;
+use OCP\IDBConnection;
+use OCP\Migration\IOutput;
+use OCP\Migration\SimpleMigrationStep;
+use Override;
+
+/**
+ * Index the CONFERENCE property of calendar objects stored before it became searchable
+ */
+class Version3000Date20261112000000 extends SimpleMigrationStep {
+	public function __construct(
+		private readonly IDBConnection $db,
+		private readonly IJobList $jobList,
+	) {
+	}
+
+	#[Override]
+	public function postSchemaChange(IOutput $output, Closure $schemaClosure, array $options): void {
+		$query = $this->db->getQueryBuilder();
+		$query->select($query->func()->max('id'))
+			->from('calendarobjects');
+		$result = $query->executeQuery();
+		$maxId = (int)$result->fetchOne();
+		$result->closeCursor();
+
+		$this->jobList->add(BuildCalendarSearchIndexBackgroundJob::class, [
+			'offset' => 0,
+			'stopAt' => $maxId,
+			'property' => 'CONFERENCE',
+		]);
+	}
+}
diff --git a/apps/dav/tests/unit/CalDAV/CalDavBackendTest.php b/apps/dav/tests/unit/CalDAV/CalDavBackendTest.php
index e8aa31a6f44f6..f445053587a11 100644
--- a/apps/dav/tests/unit/CalDAV/CalDavBackendTest.php
+++ b/apps/dav/tests/unit/CalDAV/CalDavBackendTest.php
@@ -20,6 +20,7 @@
 use OCA\DAV\DAV\Sharing\Plugin as SharingPlugin;
 use OCA\DAV\Events\CalendarDeletedEvent;
 use OCA\DAV\Exception\UidConflict;
+use OCP\Calendar\ICalendarQuery;
 use OCP\IConfig;
 use OCP\IL10N;
 use OCP\Log\Audit\CriticalActionPerformedEvent;
@@ -1291,6 +1292,43 @@ public static function searchDataProvider(): array {
 		];
 	}
 
+	public function testSearchConference(): void {
+		$calendarId = $this->createTestCalendar();
+
+		$uri = static::getUniqueID('calobj');
+		$calData = <<<EOD
+BEGIN:VCALENDAR
+VERSION:2.0
+PRODID:Nextcloud Calendar
+BEGIN:VEVENT
+CREATED;VALUE=DATE-TIME:20130910T125139Z
+UID:47d15e3ec8-conference
+LAST-MODIFIED;VALUE=DATE-TIME:20130910T125139Z
+DTSTAMP;VALUE=DATE-TIME:20130910T125139Z
+SUMMARY:Hybrid meeting
+LOCATION:Meeting room 2
+CONFERENCE;VALUE=URI;FEATURE=AUDIO,VIDEO,CHAT;LABEL=Nextcloud Talk:https://cloud.example.com/call/abc123
+DTSTART;VALUE=DATE-TIME:20130912T130000Z
+DTEND;VALUE=DATE-TIME:20130912T140000Z
+CLASS:PUBLIC
+END:VEVENT
+END:VCALENDAR
+EOD;
+		$this->backend->createCalendarObject($calendarId, $uri, $calData);
+
+		$calendarInfo = [
+			'id' => $calendarId,
+			'principaluri' => 'user1',
+			'{http://owncloud.org/ns}owner-principal' => 'user1',
+		];
+
+		$this->assertCount(0, $this->backend->search($calendarInfo, '/call/', ['LOCATION'], [], null, null));
+		$result = $this->backend->search($calendarInfo, '/call/', [ICalendarQuery::SEARCH_PROPERTY_CONFERENCE], [], null, null);
+		$this->assertCount(1, $result);
+		$this->assertSame($uri, $result[0]['uri']);
+		$this->assertSame('https://cloud.example.com/call/abc123', $result[0]['objects'][0]['CONFERENCE'][0][0]);
+	}
+
 	public function testSameUriSameIdForDifferentCalendarTypes(): void {
 		$calendarId = $this->createTestCalendar();
 		$subscriptionId = $this->createTestSubscription();
diff --git a/lib/public/Calendar/ICalendarQuery.php b/lib/public/Calendar/ICalendarQuery.php
index c927fc42efab9..4157f3ea20581 100644
--- a/lib/public/Calendar/ICalendarQuery.php
+++ b/lib/public/Calendar/ICalendarQuery.php
@@ -67,6 +67,11 @@ interface ICalendarQuery {
 	 */
 	public const SEARCH_PROPERTY_ORGANIZER = 'ORGANIZER';
 
+	/**
+	 * @since 36.0.0
+	 */
+	public const SEARCH_PROPERTY_CONFERENCE = 'CONFERENCE';
+
 	/**
 	 * Limit the results to the calendar uri(s)
 	 *