User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; pl; rv:1.8.1.4) Gecko/20070515 Firefox/2.0.0.4 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; pl; rv:1.8.1.4) Gecko/20070515 Firefox/2.0.0.4 The vulnerability (can I call this one a vulnerability?) stems from the creation of many tabs in the same popup window. FF 2.0.0.4 fails to react properly and crashes. Code execution IS NOT possible. Reproducible: Always Steps to Reproduce: Visit the provided website. Actual Results: FF crashes. Expected Results: FF does not crash. I would not call this critical but I had no other option as 'crashing' is placed among the critical issues. This is, however, in no way a critical issue.