ChatterMate has Stored Cross-Site Scripting (XSS) via Chatbot Input Execution
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| chattermate | chattermate.chat | before 1.0.9 | 1.0.9 | Patch available | CNA |
- chattermate.chat Vendorchattermate Affected before 1.0.9 Fixed in 1.0.9 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:chattermate:chattermate:*:*:*:*:*:*:*:* | before 1.0.9 | Vulnerable | chattermate |
- cpe:2.3:a:chattermate:chattermate:*:*:*:*:*:*:*:* Versions before 1.0.9 Vulnerable ·chattermate
Remediation
- Fix · CNA chattermate.chat (chattermate) Fixed in 1.0.9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-24399
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences