CVE-2026-24399

critical · 9.3

ChatterMate is a no-code AI chatbot agent framework. In versions 1.0.8 and below, the chatbot accepts and executes malicious HTML/JavaScript payloads when supplied as chat input. Specifically, an <iframe> payload containing a javascript: URI can be processed and executed in the browser context. This allows access to sensitive client-side data such as localStorage tokens and cookies, resulting in client-side injection. This issue has been fixed in version 1.0.9.

9.3

CVSS

0.3%

EPSS (exploit prob.)

25th

EPSS percentile

2026-01-24

Published

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

Weaknesses

CWE-79

Affected products

Vendor	Product	Affected versions
chattermate	chattermate	< 1.0.9

Check a specific version with /api/v1/cve/match.

References

https://github.com/chattermate/chattermate.chat/commit/ff3398031abb97ae28546eaf993fed3619eaffdd
https://github.com/chattermate/chattermate.chat/releases/tag/v1.0.9
https://github.com/chattermate/chattermate.chat/security/advisories/GHSA-72p3-w95w-q3j4

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-24399