Failing to respect user groups of logged in users when caching queries, Extbase is susceptible to information disclosure. The query caching (introduced in Extbase 6.2) used to cache queries that query results for a specific user group were presented to a different group.
typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2014-001
www.debian.org/security/2014/dsa-2942
www.openwall.com/lists/oss-security/2014/06/03/2
github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2014-3946.yaml
nvd.nist.gov/vuln/detail/CVE-2014-3946
typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2014-001