Mozilla Firefox and Thunderbird before 1.5.0.4 strip the Unicode Byte-order-Mark (BOM) from a UTF-8 page before the page is passed to the parser, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a BOM sequence in the middle of a dangerous tag such as SCRIPT.
| Software | From | Fixed in |
|---|---|---|
| mozilla / firefox | - | 1.5.0.3.x |
| mozilla / thunderbird | - | 1.5.0.3.x |