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CVE-2026-65644 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: CISA-ADPCVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/RocketChat/Rocket.Chat/pull/41595	[email protected]	PatchVendor Advisory
https://hackerone.com/reports/3872858	[email protected]	Third Party AdvisoryIssue Tracking

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
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
CPE cpe:2.3:a:rocket.chat:rocket.chat:::::::: cpe:2.3:a:rocket.chat:rocket.chat:8.7.0:::::::* Remediation No remediation found in references.

Change History

4 change records found show changes

Date	Action	Recorded By
Sep 4, 2026	Initial Analysis	[email protected]
Aug 27, 2026	CVE Modified	[email protected]
Aug 27, 2026	CVE Modified	CISA-ADP
Aug 21, 2026	New CVE Received	[email protected]