Znuny before LTS 6.5.1 through 6.5.10 and 7.0.1 through 7.0.16 allows DoS/ReDos via email. Parsing the content of emails where HTML code is copied from Microsoft Word could lead to high CPU usage and block the parsing process.
| Software | From | Fixed in |
|---|---|---|
| znuny / znuny | 6.0.0 | 6.1.0 |
| znuny / znuny | 7.0.1 | 7.0.16.x |
| znuny / znuny | 6.5.1 | 6.5.10.x |