Server Side Request Forgery (SSRF) vulnerability exists in Discourse 2.3.2 and 2.6 via the email function. When writing an email in an editor, you can upload pictures of remote websites.
| Software | From | Fixed in |
|---|---|---|
| discourse / discourse | 2.3.2 | 2.3.2.x |
| discourse / discourse | 2.6.0 | 2.6.0.x |