CVE-2026-28282
Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a security flaw in the discourse-policy plugin which allowed a user with policy creation permission to gain membership access to any private/restricted groups. Once membership to a private/restricted group has been obtained, the user will be able to read private topics that only the group has access to. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. As a workaround, review all policies for the use of `add-users-to-group` and temporarily remove the attribute from the policy. Alternatively, disable the discourse-policy plugin by disabling the `policy_enabled` site setting.
- Affected products
- Discourse, Discourse-Policy
- Discourse
- < 2026.1.2, 2026.2.1, 2026.3.0
- Fix
- Available
- CVSS 3.1
- 6.5 MEDIUM
- EPSS
- 0.3% (26th percentile)
- Weakness
- CWE-863
- NVD status
- Analyzed
- Published
- 2026-03-19
No indexed exploits for CVE-2026-28282 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2026-28282 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.