CVE-2026-65644 Cross-site scripting in Rocket.Chat
An unauthenticated attacker can inject malicious HTML links into the agent queue view via the Livechat visitor name field, enabling phishing or session hijacking.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-65644?
CVE-2026-65644 is a high-severity cross-site scripting vulnerability in Rocket.chat Rocket.chat, published on 21 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-65644?
It affects 1 product.
Products include Rocket.chat Rocket.chat.
How do I fix CVE-2026-65644?
No fix has been published for CVE-2026-65644 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-65644 being exploited?
There is no known exploitation of CVE-2026-65644 in the wild and no public exploit code.
Other vulnerabilities in Rocket.chat Rocket.chat
Sources
Also known as GHSA-68rm-q8fv-v22v.