---
cve: "CVE-2026-48494"
severity: "HIGH"
cvss: 7.1
epss: "34%"
vendor: "baptisteArno"
kev: false
exploited: false
published: "2026-08-11 18:17:33"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T03:45:43+02:00"
---

# CVE-2026-48494

> 7.1 HIGH · 🧪 PoC

## Beschreibung

TypeBot is a chatbot builder tool. In version 3.16.1, an authenticated user who has read access to any typebot can resume a WhatsApp preview webhook session that belongs to a different typebot by mixing an authorized `typebotId` and `blockId` and a foreign preview phone number tied to another preview session. The WhatsApp test-webhook handler authorizes the parent typebot first, but then resolves the preview chat session only by `wa-preview-{phone}`. As a result, an attacker can inject arbitrary webhook JSON into another workspace's WhatsApp preview session and advance its draft/unpublished flow without any access to the victim typebot. Version 3.17.0 patches the issue.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 36a618610174fd168fb255d9c8ecc0d2cf61a192 (Commit)
- 31c360a342e40d1423e5421c046e8f821b1154c4 (Commit)

## Referenzen

- <https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-fqf7-mmp5-j3jq>
- <https://github.com/baptisteArno/typebot.io/pull/2499>
- <https://github.com/baptisteArno/typebot.io/commit/36a618610174fd168fb255d9c8ecc0d2cf61a192>
- <https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-48494) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_