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	version < 7.10.15
Rocket.chat Rocket.chat	8.1.0 ≤ version < 8.1.8
Rocket.chat Rocket.chat	8.2.0 ≤ version < 8.2.8
Rocket.chat Rocket.chat	8.3.0 ≤ version < 8.3.8
Rocket.chat Rocket.chat	8.4.0 ≤ version < 8.4.6
Rocket.chat Rocket.chat	8.5.0 ≤ version < 8.5.3
Rocket.chat Rocket.chat	8.6.0 ≤ version < 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.