Description
Rocket.Chat in versions before 8.8.0, 8.7.1, 8.6.2, 8.5.3, 8.4.6, 8.3.8, 8.2.8, 8.1.8, and 7.10.15 has a REST API endpoint POST /api/v1/livechat/visitor that accepts an unauthenticated, unsanitized name field for Livechat visitors. This name is stored raw and later rendered via dangerouslySetInnerHTML in the Omnichannel Queue side panel (InquireSidePanelItem.tsx), injecting a real, clickable HTML link - pointing to any attacker-controlled domain, with arbitrary social-engineering text - into the DOM of any agent viewing the queue.
CVSS 7.5EPSS 0.298%Risk 0.77
View source- Published
- 2026-08-21 04:18:13
- Affected versions
- <8.8.0,<8.7.1,<8.6.2,<8.5.3,<8.4.6,<8.3.8,<8.2.8,<8.1.8,<7.10.15
- Type
- Web application
- Last modified
- 2026-08-27 20:18:22
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N