Medium severity6.1NVD Advisory· Published Mar 19, 2026· Updated Jun 17, 2026
CVE-2026-27570
CVE-2026-27570
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
5cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*range: >=2026.1.0,<2026.1.2
- cpe:2.3:a:discourse:discourse:2026.3.0:*:*:*:latest:*:*:*
- (no CPE)range: <2026.3.0-latest.1, <2026.2.1, <2026.1.2
- (no CPE)range: >= 2026.1.0-latest, < 2026.1.2
Patches
Vulnerability mechanics
References
4- github.com/discourse/discourse/commit/43a5a60b595f0120e6adfc131f2408508fe341f1nvdPatch
- github.com/discourse/discourse/commit/c14f8f52b7999328bd9f8665f2ecfa24dadc4bf1nvdPatch
- github.com/discourse/discourse/commit/f2aafa5c7467c94fcd4ebd36785a98e77ca088ccnvdPatch
- github.com/discourse/discourse/security/advisories/GHSA-hfxw-89hw-vwmvnvdVendor Advisory
News mentions
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