Auth bypass in Baptistearno Typebot.io

CVE-2026-48495

TypeBot is a chatbot builder tool. Prior to version 3.17.0, the Google Sheets OAuth callback decodes a base64-encoded JSON `state` parameter and trusts the embedded `workspaceId`, `typebotId`, `blockId`, and `redirectUrl` without cryptogra…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-48495?
CVE-2026-48495 is a high-severity vulnerability in Baptistearno Typebot.io, classified under Missing Authorization. CVSS score: 7.1/10. Published 2026-08-11.
How severe is CVE-2026-48495?
High severity. CVSS v3 base score is 7.1 out of 10.