CVE-2019-25737 Live Chat Unlimited 2.8.3 Stored Cross-Site Scripting
Unauthenticated attackers can inject malicious scripts via chat input, leading to admin cookie theft or forced redirects in Live Chat Unlimited.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-25737?
CVE-2019-25737 is a medium-severity cross-site scripting vulnerability in Screets Live Chat Unlimited, published on 4 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Live Chat Unlimited 2.8.3 contains a stored cross-site scripting vulnerability that allows unauthenticated attackers to inject malicious scripts through the chat input field. Attackers can submit payloads containing script tags and event handlers that execute in the admin area, enabling cookie theft or forced redirects to malicious websites.
Weakness: CWE-79
Which versions are affected by CVE-2019-25737?
How do I fix CVE-2019-25737?
No fix has been published for CVE-2019-25737 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-2019-25737 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25737 exists.
Sources
Also known as GHSA-j3hr-xc6m-97h9.