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.
Published: 2026-08-21
Score: n/a
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

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History

Fri, 21 Aug 2026 04:45:00 +0000

Type Values Removed Values Added
Title Unauthenticated Visitor Name Injection Enables XSS in Rocket.Chat Livechat Queue
First Time appeared Rocket.chat
Rocket.chat rocket.chat
Vendors & Products Rocket.chat
Rocket.chat rocket.chat

Fri, 21 Aug 2026 03:30:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-79
References

Subscriptions

Rocket.chat Rocket.chat
cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published:

Updated: 2026-08-21T02:53:43.406Z

Reserved: 2026-07-22T15:00:06.103Z

Link: CVE-2026-65644

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-21T04:18:13.780

Modified: 2026-08-21T04:18:13.780

Link: CVE-2026-65644

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-21T04:30:09Z

Weaknesses
  • CWE-79

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