CVE-2026-44633 Live Helper Chat: REST API chat update accepts arbitrary chat fields across department boundaries
A REST API flaw allows users to modify chats in unauthorized departments, enabling data tampering and potential code execution via operator-side JavaScript injection.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-44633?
CVE-2026-44633 is a high-severity missing authorization vulnerability in livehelperchat, published on 14 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Live Helper Chat is an open-source application that enables live support websites. In 4.84v, the Live Helper Chat REST API chat update endpoint allows a REST user with lhchat/use to update a chat in a department they cannot read. The endpoint accepts arbitrary chat object fields, so the user can change the chat hash and status and then access or tamper with the chat through visitor/widget paths. The same write primitive can set operation_admin, which is later emitted as operator-side JavaScript.
Weakness: CWE-863
Which versions are affected by CVE-2026-44633?
How do I fix CVE-2026-44633?
No fix has been published for CVE-2026-44633 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-44633 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44633 exists.
Sources
Also known as GHSA-hjqq-qmvj-9whm.