CVE-2026-28227
Discourse Vulnerable to Unauthorized Topic Creation in Staff-Only Categories via Topic Timer publish_to_category
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-863 |
| Vendor | discourse |
| Product | discourse |
| Published | Feb 26, 2026 |
| Last Updated | Mar 3, 2026 |
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Affected Versions
discourse / discourse
< 2025.12.2 >= 2026.1.0-latest, < 2026.1.1 >= 2026.2.0-latest, < 2026.2.0