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.
- Affected products
- Typebot
- Fix
- Available
- CVSS 4.0
- 8.5 HIGH
- EPSS
- 0.3% (20th percentile)
- Weakness
- CWE-79
- NVD status
- Deferred
- Published
- 2026-05-22
No indexed exploits for CVE-2026-39970 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2026-39970 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.