The UTF-8 decoder in codecs/qutfcodec.cpp in Qt 3.3.8 and 4.2.3 does not reject long UTF-8 sequences as required by the standard, which allows remote attackers to conduct cross-site scripting (XSS) and directory traversal attacks via long sequences that decode to dangerous metacharacters.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Qt | Qt | 3.3.8 (including) | 3.3.8 (including) |
| Qt | Qt | 4.2.3 (including) | 4.2.3 (including) |