CVE-2026-65644

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/RocketChat/Rocket.Chat/pull/41595	Patch Vendor Advisory
https://hackerone.com/reports/3872858	Third Party Advisory Issue Tracking

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:rocket.chat:rocket.chat::::::::
	cpe:2.3:a:rocket.chat:rocket.chat::::::::
	cpe:2.3:a:rocket.chat:rocket.chat::::::::
	cpe:2.3:a:rocket.chat:rocket.chat::::::::
	cpe:2.3:a:rocket.chat:rocket.chat::::::::
	cpe:2.3:a:rocket.chat:rocket.chat::::::::
	cpe:2.3:a:rocket.chat:rocket.chat::::::::
	cpe:2.3:a:rocket.chat:rocket.chat:8.7.0:::::::*

History

No history.

Information

Published : 2026-08-21 04:18

Updated : 2026-09-04 18:30

NVD link : CVE-2026-65644

Mitre link : CVE-2026-65644

CVE.ORG link : CVE-2026-65644

JSON object : View

Products Affected

rocket.chat

rocket.chat

CWE

CWE-79

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

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