In PHP 8.3.* before 8.3.5, function mb_encode_mimeheader() runs endlessly for some inputs that contain long strings of non-space characters followed by a space. This could lead to a potential DoS attack if a hostile user sends data to an application that uses this function.
| Software | From | Fixed in |
|---|---|---|
| php / php | 8.3.0 | 8.3.5 |