CVE-2026-34207
TypeBot: SSRF Protection Bypass via DNS-Resolved Hostnames in Webhook / HTTP Request Validation
Description
TypeBot is a chatbot builder tool. 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.
INFO
Published Date :
May 22, 2026, 5:12 p.m.
Last Modified :
May 22, 2026, 5:12 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-34207
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update TypeBot to version 3.16.0 or later.
- Verify DNS resolution is performed before requests.
- Implement stricter URL validation for webhook inputs.
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CVE-2026-34207 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-34207 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
May. 22, 2026
Action Type Old Value New Value Added Description TypeBot is a chatbot builder tool. 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L Added CWE CWE-20 Added CWE CWE-918 Added Reference https://github.com/baptisteArno/typebot.io/commit/23818bb0e54db23c456ee3fa6b12d82b2af848b8 Added Reference https://github.com/baptisteArno/typebot.io/releases/tag/v3.16.0 Added Reference https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-grcc-6x37-wwgp