The TYPO3 security team has identified a critical security issue in the TYPO3 core.
Updates for TYPO3 versions 4.2.x, 4.1.x and 4.0.x, as well as patches for versions 3.3, 3.5, 3.6, 3.7, 3.8 and 4.3alpha1 will be released together with a security bulletin on typo3.org on Tuesday, Feb. 10 at 10:00 am CET (9:00 am GMT).
Since this a very important security fix, please be prepared to update your TYPO3 installations on Tuesday.
Until the public security bulletin and the fixed versions is out, please understand that we cannot provide any further information.
TYPO3 Security Team