7.5highHigh
CVE-2026-65644
Rocket.Chat Rocket.Chat
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.
Exploitation status
- A vendor advisory or patch reference has been published.
What the metrics mean
- It is reachable over a network, without needing local access.
- For an attacker who can reach it, no special conditions are needed to exploit it.
- To exploit it, no account is needed.
- Beyond that, no action by a user is required.
Scoring
- CVSS
- 7.5 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- Weakness
- CWE-79
- Assigned by
- support@hackerone.com
Dates
- Published
- 2026-08-21
- Last modified
- 2026-09-04
- Sources
- NVD
Affected products
- Rocket.Chat Rocket.Chat- 7.10.15, 8.1.0 - 8.1.8, 8.2.0 - 8.2.8, 8.3.0 - 8.3.8, 8.4.0 - 8.4.6, 8.5.0 - 8.5.3, 8.6.0 - 8.6.2, 8.7.0
As listed in the NVD configuration data. Not a statement about your estate.