The Profiler implementation in Mozilla Firefox before 22.0 parses untrusted data during UI rendering, which allows user-assisted remote attackers to execute arbitrary JavaScript code via a crafted web site.
Improper Control of Generation of Code The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.