Public Upload Endpoint Exposure in TypeBot Chatbot Builder Tool by TypeBot Inc.
CVE-2026-48763

8.2HIGH

Key Information:

Vendor

Baptistearno

Status
Typebot.io
Vendor
CVE Published:
11 August 2026

What is CVE-2026-48763?

The TypeBot chatbot builder tool has a vulnerability stemming from a deprecated public upload endpoint. This endpoint, accessible without authentication, allows attackers to generate presigned URLs for file uploads to an S3 bucket. By knowing a valid public typebotId and blockId, an unauthenticated user can exploit this flaw to upload arbitrary files, potentially breaching the privacy and integrity of other tenants’ data. The issue has been resolved in version 3.17.0, which effectively restricts access to the upload capability.

Affected Version(s)

typebot.io < 3.17.0

References

https://github.com/baptisteArno/typebot.io/security/advis...
x_refsource_CONFIRM
https://github.com/baptisteArno/typebot.io/pull/2459
x_refsource_MISC
https://github.com/baptisteArno/typebot.io/commit/7ae4c00...
x_refsource_MISC

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.