Servers and applications
CVE-2025-22602
Discourse is an open source platform for community discussion. In affected versions an attacker can execute arbitrary JavaScript on users' browsers by posting a malicious video placeholder html element. This issue only affects sites with CSP disabled. This problem has been patched in the latest version of Discourse. Users are advised to upgrade. Users unable to upgrade should enable CSP.
- Severity
- Medium 6.1
- Published
- 4 Feb 2025
- Last changed
- 17 Jun 2026
- Added to UpHeron
- 21 Oct 2026
- Fixed in
- 3.3.4, 3.4.0
- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
DiscourseServers and applications · cpe:a:discourse:discourse |
|