CVE-2026-65644

Published: Aug 21, 2026Modified: Sep 4, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitability: 3.9 / Impact: 3.6

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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.

Affected (8)

Products: Rocket.chat: Rocket.chat

Rocket.chat

1 product

Rocket.chat

Configuration A

8 vulnerable

Vulnerable Software	Affected Versions
Rocket.chat Rocket.chat	Before 7.10.15
Rocket.chat Rocket.chat	From 8.1.0 to 8.1.8
Rocket.chat Rocket.chat	From 8.2.0 to 8.2.8
Rocket.chat Rocket.chat	From 8.3.0 to 8.3.8
Rocket.chat Rocket.chat	From 8.4.0 to 8.4.6
Rocket.chat Rocket.chat	From 8.5.0 to 8.5.3
Rocket.chat Rocket.chat	From 8.6.0 to 8.6.2
Rocket.chat Rocket.chat	Version 8.7.0

Related CWEs

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (2)

https://github.com/RocketChat/Rocket.Chat/pull/41595

Source: support@hackerone.com

PatchVendor Advisory

https://hackerone.com/reports/3872858

Source: support@hackerone.com

Third Party AdvisoryIssue Tracking

Timeline

No history available yet.