Origin Validation Error

Overview typo3/cms-core is a free open source enterprise content management system. Affected versions of this package are vulnerable to Origin Validation Error via referrer enforcement in the ReferrerEnforcer code used by the backend and Install Tool. An attacker can invoke protected backend or...

Duplicate Advisory: TYPO3-CORE-SA-2026-021: Broken Access Control in Backend and Install Tool

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-68jx-f42c-7599. This link is maintained to preserve external references. Original Description The referrer enforcement introduced with TYPO3-CORE-SA-2020-006 CVE-2020-11069 became ineffective in TYPO3 v13.0, whe...

CVE-2026-19418

The referrer enforcement introduced with TYPO3-CORE-SA-2020-006 CVE-2020-11069 became ineffective in TYPO3 v13.0, where TYPO3 CMS started serving the backend and Install Tool applications from the site's main entry script instead of the dedicated typo3/ directory. Whether a request originated fro...