Design/Logic Flaw

Use-after-free vulnerability in Mozilla Firefox before 3.6.26 and 4.x through 9.0, Thunderbird before 3.1.18 and 5.0 through 9.0, and SeaMonkey before 2.7 might allow remote attackers to execute arbitrary code via vectors related to incorrect AttributeChildRemoved notifications that affect access...

Firefox 3.6 < 3.6.26 Multiple Vulnerabilities (Mac OS X)

The installed version of Firefox 3.6 is earlier than 3.6.26. Such versions are potentially affected by multiple vulnerabilities : - A use-after-free error exists related to removed nsDOMAttribute child nodes.CVE-2011-3659 - The IPv6 literal syntax in web addresses is not being properly enforced...