CVE-2026-27570
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the onebox method in the SharedAiConversation model renders the conversation title directly into HTML without proper sanitization. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. As a workaround, tighten access by changing the `ai_bot_public_sharing_allowed_groups` site setting.
- Affected products
- Discourse
- Discourse
- < 2026.1.2, 2026.2.1, 2026.3.0
- Fix
- Available
- CVSS 3.1
- 6.1 MEDIUM
- EPSS
- 0.3% (27th percentile)
- Weakness
- CWE-79
- NVD status
- Analyzed
- Published
- 2026-03-19
CVE-2026-27570 at NVD
No indexed exploits for CVE-2026-27570 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2026-27570 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.