Servers and applications
CVE-2026-28227
Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, TL4 users can publish topics into staff-only categories via the `publish_to_category` topic timer, bypassing authorization checks. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.
- Severity
- Low 1.2
- Published
- 26 Feb 2026
- Last changed
- 17 Jun 2026
- Added to UpHeron
- 21 Oct 2026
- Fixed in
- 2025.12.2, 2026.1.1
- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
DiscourseServers and applications · cpe:a:discourse:discourse |
|