diff --git a/typo3/sysext/core/Classes/Error/AbstractExceptionHandler.php b/typo3/sysext/core/Classes/Error/AbstractExceptionHandler.php
index 7ab61b64d9dee29cd9dc2c949de470e582f6dd70..620823e54e9192e3fe96a7fd42e5ae97eba7ceb1 100644
--- a/typo3/sysext/core/Classes/Error/AbstractExceptionHandler.php
+++ b/typo3/sysext/core/Classes/Error/AbstractExceptionHandler.php
@@ -53,6 +53,8 @@ abstract class AbstractExceptionHandler implements ExceptionHandlerInterface, Si
     public const IGNORED_HMAC_EXCEPTION_CODES = [
         1581862822, // Failed HMAC validation due to modified __trustedProperties in extbase property mapping
         1581862823, // Failed HMAC validation due to modified form state in ext:forms
+        1320830018, // Failed HMAC validation due to modified HMAC string in Extbase HashService
+        1320830276, // Failed HMAC validation due to too short HMAC string in Extbase HashService
     ];
 
     /**