CVE-2026-30048

A stored cross-site scripting (XSS) vulnerability exists in the NotChatbot WebChat widget thru 1.4.4

Medium · published March 18, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
22.6
In the wild
Unconfirmed
What it is

A stored cross-site scripting (XSS) vulnerability exists in the NotChatbot WebChat widget thru 1.4.4. User-supplied input is not properly sanitized before being stored and rendered in the chat conversation history. This allows an attacker to inject arbitrary JavaScript code which is executed when the chat history is reloaded. The issue is reproducible across multiple independent implementations of the widget, indicating that the vulnerability resides in the product itself rather than in a specific website configuration.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00310 · 22.6th percentile
Published
2026-03-18T00:00Z
EPSS history
Timeline
  • 18 MAR 00:00Z
    A stored cross-site scripting (XSS) vulnerability exists in the NotChatbot WebChat widget thru 1.4.4
    cvelistv5