Dear TYPO3 users,
a vulnerability has been found in the following third party TYPO3 extension:
"Single Sign-on with SAML" (md_saml)
For further information on the issue, please read the related advisory
TYPO3-EXT-SA-2025-016 which was published today:
TYPO3-EXT-SA-2025-016: Vulnerability in bundled package in extension "Single
Sign-on with SAML" (md_saml)
[1]https://typo3.org/security/advisory/typo3-ext-sa-2025-016
In general the TYPO3 Security Team recommends to read the following pages:
The TYPO3 Security Guide:
[2]Security guidelines — TYPO3 Explained main documentation
Make sure you are subscribed to the TYPO3 Announce List:
[3]https://lists.typo3.org/cgi-bin/mailman/listinfo/typo3-announce
See all TYPO3 security advisories:
[4]Security Advisories - TYPO3 Association
Best regards,
Torben Hansen
Member of the TYPO3 Security Team