CVE-2026-62861

Medium

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.

SeverityMedium

CVSS6.4

Exploit probability—

ProductBaptistearno Typebot.io

PublishedAug 25, 2026

First seenAug 25, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key CWE-862Missing authorization

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

Product	Affected versions	Fixed in
baptisteArno typebot.io	< 3.18.0	—

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