CVE-2026-62861CWE-639CWE-862broken-access-control

CVE-2026-62861

published August 26, 2026

CVSS
6.4
EPSS
0%
Percentile
34.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
6.4 · NONE
CVSS v4.0
6.4 · 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
EPSS
0.00414 · 34.6th percentile
Weaknesses
CWE-639 · Authorization Bypass Through User-Controlled Key; CWE-862 · Missing Authorization
Published
2026-08-26T02:17Z
References (3)
https://github.com/baptisteArno/typebot.io/commit/06575dfcd461ba76071012869d4b1f4046f9a6b8 · [email protected]https://github.com/baptisteArno/typebot.io/releases/tag/v3.18.0 · [email protected]https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-7h82-p425-wpmg · [email protected]
EPSS history
Timeline
  • 27 AUG 06:39Z
    EPSS moved — → 0%
    epss
  • 25 AUG 21:46Z
    TypeBot: Cross-tenant custom-domain removal via unbound `name` in handleDeleteCustomDomain
    cvelistv5