http://www.mozilla.org/security/known-vulnerabilities/firefox35.html#firefox3.5.4

Mozilla fixes 16 flaws with Firefox 3.5.4:

http://www.computerworld.com/s/article/9140008/Mozilla_fixes_16_flaws_with_Firefox_3.5.4

 Mozilla today patched 16 vulnerabilities in Firefox, 11 of them critical, as it updated the open-source browser to version 3.5.4. 

 The 11 critical Firefox 3.5 vulnerabilities were located in a variety ofn components, including Web worker calls, the GIF color map parser, the string-to-number converter, a trio of third-party media libraries, and both the JavaScript and browser engines.