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Vulnerabilities CVE-2026-62861

CVE-2026-62861

Medium
Open
TLP:CLEAR

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

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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.

Details

CVSS Score
6.4
CVSS 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
Confidence
90%
Published
Aug 25, 2026
Last Modified
Aug 25, 2026
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