CVE-2026-30048 Details
Description
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.
A stored cross-site scripting vulnerability has been identified in the NotChatbot WebChat widget, affecting versions through 1.4.4. The vulnerability arises because user input is not adequately sanitized before being saved and displayed in the chat conversation history. This flaw enables an attacker to inject arbitrary JavaScript, which executes when the chat history is accessed. The issue is present in multiple independent implementations of the widget, suggesting that it is a fundamental flaw in the product rather than a specific website configuration.
Users are advised to update to version 1.5.0 or later, where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Mar 18, 2026CISA-ADP
Assessed Mar 19, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://app.unpkg.com/@developer.notchatbot/[email protected] | [email protected] | ProductVendor |
| https://gist.github.com/0xN4no/0601f398942a29259d217ea650f694fe | [email protected] | ExploitTechnical Description |
| https://github.com/0xN4no/CVE-2026-30048 | [email protected] | BundleTechnical Description |
| https://www.npmjs.com/package/@developer.notchatbot/webchat | [email protected] | ProductVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| @developer.notchatbot/webchat | All versions |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 19, 2026 | CVE Modified | CISA-ADP |
| Mar 18, 2026 | New CVE Received | [email protected] |