Dear TYPO3 users,
several vulnerabilities have been found in the following third party TYPO3
extensions:
“Additional TCA” (additional_tca)
“[clickstorm] SEO” (cs_seo)
For further information on the issues, please read the related advisories
TYPO3-EXT-SA-2025-002 and TYPO3-EXT-SA-2025-003 which were published today:
TYPO3-EXT-SA-2025-002: Cross-Site Scripting in extension “Additional TCA”
(additional_tca)
[1]https://typo3.org/security/advisory/typo3-ext-sa-2025-002
TYPO3-EXT-SA-2025-003: Multiple vulnerabilities in extension “[clickstorm]
SEO” (cs_seo)
[2]https://typo3.org/security/advisory/typo3-ext-sa-2025-003
In general the TYPO3 Security Team recommends to read the following pages:
The TYPO3 Security Guide:
[3]https://docs.typo3.org/typo3cms/CoreApiReference/Security/Index.html
Make sure you are subscribed to the TYPO3 Announce List:
[4]TYPO3-announce Info Page
See all TYPO3 security advisories:
[5]https://typo3.org/help/security-advisories/
Best regards,
Torben Hansen
Member of the TYPO3 Security Team