Security vulnerabilities have been discovered in third-party TYPO3 extensions:
css_filelinks, terminal, beuserswitch, rtg_files, irfaq, skt_eurocalc, jftcaforms, bc_post2facebook, aeurltool, mv_cooking, toi_category, typo3_webservice, ya_googlesearch, mm_whtppr, sysutils
For further information on all CSB (Collective Security Bulletin) issues, please read the related advisory TYPO3-EXT-SA-2012-001 that was published today:
http://typo3.org/teams/security/security-bulletins/typo3-extensions/typo3-ext-sa-2012-001/
In general the TYPO3 Security Team recommends to read the following pages:
The TYPO3 Security Guide:
http://typo3.org/documentation/document-library/extension-manuals/doc_guide_security/current/
Make sure you are subscribed to the TYPO3 Announce List:
http://lists.typo3.org/cgi-bin/mailman/listinfo/typo3-announce
See all TYPO3 security advisories for TYPO3 third party extensions:
http://typo3.org/teams/security/security-bulletins/typo3-extensions/