Medium 5.4Published Mar 18, 2026

CVE-2026-30048A stored cross-site scripting (XSS) vulnerability exists in the NotChatbot WebChat widget thru 1.4.4.

Updated under an hour ago (2026-10-19 09:10 UTC)

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Exploited in the last 30 days

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.

CVSS: 5.4 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Deferred
Record last updated: Jun 17, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

No affected products are listed yet.

References

https://app.unpkg.com/@developer.notchatbot/webchat@1.4.4
https://gist.github.com/0xN4no/0601f398942a29259d217ea650f694fe
https://github.com/0xN4no/CVE-2026-30048
https://www.npmjs.com/package/@developer.notchatbot/webchat

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.