TYPO3 Exception 1588095935


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#1588095935 TYPO3\CMS\Core\Http\Security\MissingReferrerException
Missing referrer for /main

This error occurs when logging into the backend or install tool and is triggered by a failed check of a referer header.

The reason for this is the usage of an HTTP proxy, for example a reverse proxy to an encapsulated system without sufficient header delegation.


The feature was introduced due to potential security risks, visit the related security advisory for more information.

The feature can be enabled or disabled in Admin Tools > Settings > Configure Installation-Wide Options > System > [SYS][features][security.backend.enforceReferrer].

It is recommended that you keep this feature enabled.