What is CVE-2026-39966?

CVE-2026-39966 is a medium-severity vulnerability in Baptistearno Typebot.io, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-05-22.

How severe is CVE-2026-39966?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Baptistearno Typebot.io

CVE-2026-39966

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, lea…

Vulnerability class: Broken Access Control

EPSS: 0.000 (9.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Baptistearno Typebot.io — versions < 3.16.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-39966?: CVE-2026-39966 is a medium-severity vulnerability in Baptistearno Typebot.io, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-05-22.
How severe is CVE-2026-39966?: Medium severity. CVSS v3 base score is 6.5 out of 10.