CVE-2026-39970

TypeBot is a chatbot builder tool. Versions 3.15.2 and prior contain a critical stored XSS vulnerability in the app.typebot.io profile picture upload form. The application fails to sanitize or restrict SVG/XML-based uploads and directly renders them when accessed through the domain. By uploading a crafted malicious SVG file containing embedded JavaScript, an attacker will execute arbitrary JavaScript code. This vulnerability directly enables stored XSS exploitation because the payload is persistently stored on your infrastructure (app.typebot.io) and accessible from a public-facing, permanent link. Stored XSS via malicious SVG uploads to app.typebot.io allows attackers to execute arbitrary JavaScript in victims' browsers, enabling session/token theft, account takeover, and exfiltration of sensitive user data. This issue has been fixed in version 3.16.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/baptisteArno/typebot.io/releases/tag/v3.16.0
https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-jj87-c343-26vp
https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-jj87-c343-26vp

Configurations

No configuration.

History

22 May 2026, 21:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-22 19:17

Updated : 2026-06-17 10:42

NVD link : CVE-2026-39970

Mitre link : CVE-2026-39970

CVE.ORG link : CVE-2026-39970

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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