Description
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.
References (3)
Core 3
Core References
Exploit, Vendor Advisory x_refsource_confirm
https://github.com/chattermate/chattermate.chat/security/advisories/GHSA-72p3-w95w-q3j4
Patch x_refsource_misc
https://github.com/chattermate/chattermate.chat/commit/ff3398031abb97ae28546eaf993fed3619eaffdd
Product, Release Notes x_refsource_misc
https://github.com/chattermate/chattermate.chat/releases/tag/v1.0.9
Scores
CVSS v3
9.3
EPSS
0.0030
EPSS Percentile
21.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-79
Status
published
Products (1)
chattermate/chattermate
< 1.0.9
Published
Jan 24, 2026
Tracked Since
Feb 18, 2026