typo3/cms and typo3/cms-core are vulnerable to arbitrary code execution. An attacker is able to inject and execute malicious TypoScript as PHP code due to the lack of separating user-submitted data from the internal configuration in the Form Designer backend module.
github.com/advisories/GHSA-c5wx-6c2c-f7rm
github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2022-23503.yaml
github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2022-23503.yaml
github.com/TYPO3/typo3/commit/1302e88565821f2159e08b5d818d28de17ecc830
github.com/TYPO3/typo3/commit/edf344bfdf89051db884c73dc435cd2cb1d2d33d
github.com/TYPO3/typo3/commit/fb74f1d6687c08beb61d4301d11c20dd4bc299cb
github.com/TYPO3/typo3/security/advisories/GHSA-c5wx-6c2c-f7rm
typo3.org/security/advisory/typo3-core-sa-2022-015