CyberRota Analysis
AI-GeneratedTYPO3 CMS versions 13.0.0-13.4.33 and 14.0.0-14.3.5 are vulnerable due to a flaw in referrer enforcement, allowing unauthorized access to backend and Install Tool endpoints. This vulnerability enables attackers to exploit cross-site scripting (XSS) to execute requests with the privileges of an authenticated user, potentially leading to unauthorized actions within the CMS. Organizations using affected TYPO3 versions should prioritize remediation to mitigate the risk of exploitation.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
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 from the backend or Install Tool itself was determined by comparing the referrer against the directory of the entry script, which since then is the site root. As a consequence, requests originating from any script running on one of the TYPO3 instance's own domains, such as a frontend page, were accepted by backend routes and Install Tool endpoints. Attackers able to execute JavaScript on one of those domains, for instance by exploiting a cross-site scripting vulnerability, could invoke these endpoints via Fetch/XHR with the privileges of an authenticated victim's user session. This issue affects TYPO3 CMS versions 13.0.0-13.4.33 and 14.0.0-14.3.5.