diff --git a/Classes/Domain/Search/Statistics/StatisticsWriterProcessor.php b/Classes/Domain/Search/Statistics/StatisticsWriterProcessor.php
index 1b590a8bcd..c389fd9efa 100644
--- a/Classes/Domain/Search/Statistics/StatisticsWriterProcessor.php
+++ b/Classes/Domain/Search/Statistics/StatisticsWriterProcessor.php
@@ -97,7 +97,7 @@ public function process(SearchResultSet $resultSet): SearchResultSet
             // @extensionScannerIgnoreLine
             'time_processing' => $response->debug->timing->process->time ?? 0,
             'feuser_id' => isset($TSFE->fe_user->user) ? (int)$TSFE->fe_user->user['uid'] ?? 0 : 0,
-            'cookie' => $TSFE->fe_user->id ?? '',
+            'cookie' => $TSFE->fe_user->getSession()->getIdentifier() ?? '',
             'ip' => IpAnonymizationUtility::anonymizeIp($this->getUserIp(), $ipMaskLength),
             'page' => $page,
             'keywords' => $keywords,
diff --git a/Documentation/Releases/solr-release-11-5.rst b/Documentation/Releases/solr-release-11-5.rst
index db392a6352..cc99fb0f3b 100644
--- a/Documentation/Releases/solr-release-11-5.rst
+++ b/Documentation/Releases/solr-release-11-5.rst
@@ -6,14 +6,22 @@
 Releases 11.5
 =============
 
-..  include:: HintAboutOutdatedChangelog.rst.txt
-
-Release 11.5.4
+Release 11.5.5
 --------------
 
-This is a maintenance release for TYPO3 11.5 and the last release that supports Apache Solr 8.11. Next EXT:solr release for TYPO3 11.5 will be 11.6.0, it
+This is a maintenance release for TYPO3 11.5 and the last release that supports Apache Solr 8.11.
+Next EXT:solr release for TYPO3 11.5 will be 11.6.0, it
 will contain support for Apache Solr 9 and some breaking improvements.
 
+**Note:** This change requires the database schema update, due of database schema change from `pull-request #3880 <https://github.com/TYPO3-Solr/ext-solr/pull/3880>`__
+
+11.5.5 contains the following changes:
+
+- !!![BUGFIX:11.5] Exception with tx_solr_statistics after latest TYPO3 security update by @dkd-kaehm in `#3880 <https://github.com/TYPO3-Solr/ext-solr/pull/3880>`__
+
+Release 11.5.4
+--------------
+
 11.5.4 contains the following changes:
 
 - [TASK] Fix CI 2023.09.11 on release-11.5.x by @dkd-kaehm in `#3777 <https://github.com/TYPO3-Solr/ext-solr/pull/3777>`__
diff --git a/Tests/Unit/Domain/Search/Statistics/StatisticsWriterProcessorTest.php b/Tests/Unit/Domain/Search/Statistics/StatisticsWriterProcessorTest.php
index 39b8b93320..ed90dad164 100644
--- a/Tests/Unit/Domain/Search/Statistics/StatisticsWriterProcessorTest.php
+++ b/Tests/Unit/Domain/Search/Statistics/StatisticsWriterProcessorTest.php
@@ -25,6 +25,7 @@
 use ApacheSolrForTypo3\Solr\System\Configuration\TypoScriptConfiguration;
 use ApacheSolrForTypo3\Solr\Tests\Unit\UnitTest;
 use PHPUnit\Framework\MockObject\MockObject;
+use TYPO3\CMS\Frontend\Authentication\FrontendUserAuthentication;
 use TYPO3\CMS\Frontend\Controller\TypoScriptFrontendController;
 
 /**
@@ -83,6 +84,7 @@ public function canWriteExpectedStatisticsData()
     {
         /* @var TypoScriptFrontendController $fakeTSFE */
         $fakeTSFE = $this->getDumbMock(TypoScriptFrontendController::class);
+        $fakeTSFE->fe_user = $this->getDumbMock(FrontendUserAuthentication::class);
         $fakeTSFE->id = 888;
         $fakeTime = 100;
         $fakeIP = '192.168.2.22';
diff --git a/ext_tables.sql b/ext_tables.sql
index 99da28b0ac..0113231b1c 100644
--- a/ext_tables.sql
+++ b/ext_tables.sql
@@ -27,7 +27,7 @@ CREATE TABLE tx_solr_statistics (
 	time_processing int(11) DEFAULT '0' NOT NULL,
 
 	feuser_id int(11) unsigned DEFAULT '0' NOT NULL,
-	cookie varchar(32) DEFAULT '' NOT NULL,
+	cookie varchar(255) DEFAULT '' NOT NULL,
 	ip varchar(255) DEFAULT '' NOT NULL,
 
 	keywords varchar(128) DEFAULT '' NOT NULL,