CVE-2026-30048

5.4 mediumEPSS 0.3%

Medium (5.4). EPSS 0.3% chance of exploitation in the next 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.

Severity

CVSS 3.1

5.4 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 17% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-03-18
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Packages (OSV)

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-w3vx-52j6-9fjp	npm	@developer.notchatbot/webchat	<=1.5.0	no fix published

References

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