CVE-2026-62861

TypeBot: Cross-tenant custom-domain removal via unbound `name` in handleDeleteCustomDomain

Published Aug 25, 2026 CVSS 4.0 · 6.4 Medium EPSS < 1% KEV · Not listed
Description
TypeBot is a chatbot builder tool. Prior to 3.18.0, any authenticated non-guest workspace member can remove another workspace's public custom domain and make typebots on that domain unavailable. The custom-domain delete handler in handleDeleteCustomDomain.ts authorizes a caller against a client-supplied workspaceId but sends the client-supplied domain name to the shared Vercel project before verifying that the domain belongs to that workspace. This issue is fixed in version 3.18.0.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Baptistearno
Baptistearno typebot.io
Vendors & Products Baptistearno
Baptistearno typebot.io
Type Values Removed Values Added
Description TypeBot is a chatbot builder tool. Prior to 3.18.0, any authenticated non-guest workspace member can remove another workspace's public custom domain and make typebots on that domain unavailable. The custom-domain delete handler in handleDeleteCustomDomain.ts authorizes a caller against a client-supplied workspaceId but sends the client-supplied domain name to the shared Vercel project before verifying that the domain belongs to that workspace. This issue is fixed in version 3.18.0.
Title TypeBot: Cross-tenant custom-domain removal via unbound `name` in handleDeleteCustomDomain
Weaknesses CWE-639
CWE-862
References
Metrics cvssV4_0

{'score': 6.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Aug 27, 2026, 2:35 PM
Reserved
Jul 14, 2026, 9:10 PM
Status
Deferred
Published
Aug 25, 2026, 10:17 PM
Modified
Sep 9, 2026, 9:09 PM