CVE-2026-34207 TypeBot: SSRF Protection Bypass via DNS-Resolved Hostnames in Webhook / HTTP Request Validation
Attackers can bypass SSRF protections in TypeBot by using hostnames that resolve to internal IPs, allowing access to cloud metadata and private networks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-34207?
CVE-2026-34207 is a high-severity server-side request forgery vulnerability in baptisteArno typebot.io, published on 22 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
TypeBot is a chatbot builder tool. In versions prior to 3.16.0, SSRF protection for Webhook / HTTP Request blocks validates only the URL string, blocked hostname literals, and literal IP formats. It does not resolve DNS before allowing the request. As a result, a hostname such as ssrf-repro.example that resolves to 127.0.0.1, 169.254.169.254, or RFC1918/private space passes validation and is later fetched by the backend HTTP client. This enables server-side request forgery to loopback, cloud metadata, and private network targets. This issue has been resolved in version 3.16.0.
Which versions are affected by CVE-2026-34207?
How do I fix CVE-2026-34207?
No fix has been published for CVE-2026-34207 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-34207 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34207 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-grcc-6x37-wwgp.