CVE-2026-27570
Discourse Vulnerable to Stored XSS via Shared AI Conversation Onebox
EPSS 0.35%
描述
Discourse is an open-source discussion platform. Prior to versions 2026.3.0, 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, 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.
如何修補 CVE-2026-27570
要修補 CVE-2026-27570,請將受影響套件升級到下列已修補版本。
- Bitnami/discourse—升級至 2026.1.2 或更新版本
CVE-2026-27570 正在被利用嗎?
低 — EPSS 為 0.3%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- >= 2026.1.0, < 2026.1.2, >= 2026.2.0, < 2026.2.1, >= 2026.3.0, < 2026.3.0
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
參考連結(5)
- WEBgithub.com/discourse/discourse/commit/43a5a60b595f0120e6adfc131f2408508fe341f1
- WEBgithub.com/discourse/discourse/commit/c14f8f52b7999328bd9f8665f2ecfa24dadc4bf1
- WEBgithub.com/discourse/discourse/commit/f2aafa5c7467c94fcd4ebd36785a98e77ca088cc
- WEBgithub.com/discourse/discourse/security/advisories/GHSA-hfxw-89hw-vwmv