Failing to properly encode editor input, the search result view of indexed_search is susceptible to Cross-Site Scripting, allowing authenticated editors to inject arbitrary HTML.

References

• https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/2015-12-15-5.yaml
• https://typo3.org/security/advisory/typo3-core-sa-2015-015
• https://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2015-015