Medium 6.4Published Aug 25, 2026

CVE-2026-62861TypeBot: Cross-tenant custom-domain removal via unbound `name` in handleDeleteCustomDomain

Updated under an hour ago (2026-10-19 13:10 UTC)

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It affects baptisteArno typebot.io. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for baptisteArno typebot.io

Exploited in the last 30 days

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.

CVSS: 6.4 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-639, CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Aug 27, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

baptisteArno typebot.io baptistearno:typebot.io (from the name)	before 3.18.0	CNA record

References

https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-7h82-p425-wpmgx-refsource-confirm
https://github.com/baptisteArno/typebot.io/commit/06575dfcd461ba76071012869d4b1f4046f9a6b8x-refsource-misc
https://github.com/baptisteArno/typebot.io/releases/tag/v3.18.0x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.