# 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.

- **Severity:** High 7.6 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 May 2026
- **Updated:** 22 May 2026
- **Also known as:** GHSA-grcc-6x37-wwgp

## 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.

Weakness: CWE-918 (Server-Side Request Forgery), CWE-20 (Improper Input Validation)

## 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.

## 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:

- The SSRF filter checked hostname text, but the actual destination was decided later by DNS. That gap let attacker-controlled Webhook URLs reach loopback, metadata, and private network targets. (github_poc): https://github.com/0xmrma/CVE-2026-34207

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-34207 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34207 exists.

Affected product: baptisteArno typebot.io. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-34207/ (Markdown: https://insights.sbomify.com/CVE-2026-34207/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-34207
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-34207
- OSV: https://osv.dev/vulnerability/CVE-2026-34207

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-34207/
Summaries are generated and may contain mistakes; the official description above is the record.