# CVE-2026-33712: TypeBot: Unauthenticated SSRF via isolated-vm fetch in preview chat endpoint bypasses SSRF controls

> Unauthenticated attackers can exploit SSRF in Typebot's preview endpoint to access internal networks and steal cloud credentials.

- **Severity:** Critical 10.0 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 May 2026
- **Updated:** 22 May 2026
- **Also known as:** GHSA-vc2q-r6rq-ggj9

## What is CVE-2026-33712?

CVE-2026-33712 is a critical server-side request forgery vulnerability in baptisteArno typebot.io, published on 22 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the preview chat endpoint (POST /api/v1/typebots/{typebotId}/preview/startChat) allows unauthenticated users to achieve Server-Side Request Forgery (SSRF) by supplying a custom typebot definition with server-side code blocks. The fetch function exposed inside the isolated-vm sandbox calls Node.js native fetch without the SSRF validation (validateHttpReqUrl) that protects the HTTP Request block. This bypasses all SSRF mitigations added after GHSA-8gq9-rw7v-3jpr. Exploitation of this unauthenticated SSRF vulnerability can lead to cloud credential theft, internal network access and data exfiltration for any self-hosted Typebot deployments and hosted services. This issue has been fixed in version 3.16.0.

Weakness: CWE-918 (Server-Side Request Forgery), CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-33712?


## How do I fix CVE-2026-33712?

No fix has been published for CVE-2026-33712 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-33712 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33712 exists.

Public exploit code:

- CVE-2026-33712 - Typebot <= 3.15.2 Unauthenticated SSRF via isolated-vm sandbox fetch (github_poc): https://github.com/portbuster1337/CVE-2026-33712

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-33712 and fix it if it is affected.

What it is: CVE-2026-33712 is a critical server-side request forgery vulnerability in baptisteArno typebot.io, published on 22 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33712 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-2026-33712/ (Markdown: https://insights.sbomify.com/CVE-2026-33712/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-33712
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-33712
- OSV: https://osv.dev/vulnerability/CVE-2026-33712

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-33712/
Summaries are generated and may contain mistakes; the official description above is the record.