---
cve: "CVE-2026-39966"
severity: "MEDIUM"
cvss: 6.5
epss: "0.3%"
vendor: "baptisteArno"
kev: false
exploited: false
published: "2026-05-22 19:17:03"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T22:37:32+02:00"
---

# CVE-2026-39966

> 6.5 MEDIUM · 🧪 PoC

## Beschreibung

TypeBot is a chatbot builder tool. In versions 3.15.2, the getLinkedTypebots API endpoint returns full bot definitions to any authenticated user who references a target bot ID in a Typebot Link block, regardless of workspace ownership, leading to IDOR. The authorization check uses Array.filter() with an async callback — since filter() is synchronous, the callback always returns a truthy Promise, so the access control predicate is never actually evaluated. Any authenticated Typebot user can read the full definition of any other workspace's private bots, including: all conversation blocks and logic flow, variable values embedded in the bot (credentials, API keys, PII), webhook URLs and integration configurations. This issue has been fixed in version 3.16.0.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- b9530a089b43bfa6e79e3ff9cbfab921ce832f45 (Commit)
- 7bc1a6f856f64c5ae38ecb6eb87a175b0a50c5c1 (Commit)

## Referenzen

- <https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-3fr5-999r-84qj>
- <https://github.com/baptisteArno/typebot.io/commit/b9530a089b43bfa6e79e3ff9cbfab921ce832f45>
- <https://github.com/baptisteArno/typebot.io/releases/tag/v3.16.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-39966) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_