Typo3 has released security updates to address vulnerabilities in multiple products. Exploitation of these vulnerabilities may allow an attacker to take control of the affected system.
Users and administrators are encouraged to review Typo3 Security Advisories typo3-ext-sa-2021-018, typo3-ext-sa-2021-017, typo3-ext-sa-2021-016 and typo3-ext-sa-2021-015 and apply necessary updates.