CVE-2026-28227
Low · 2.7CVSS
2.7
EPSS
0.3%
Published
Feb 26, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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