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CVE-2026-100623: capgo.app

Severity

8.7 (HIGH)

Vendor

CAP-GO

Patch status

Unpatched

Published

2026-09-26T14:16:43.293

Modified

2026-09-26T14:16:43.293

Why it matters

This matters because the issue affects identity or token handling. Successful exploitation could allow unauthorized authentication, client manipulation, or access to protected services.

Recommended admin actions

• Review and patch based on exposure, asset criticality, and business impact.
• Compare installed versions against the affected version range in the advisory.
• Review logs for suspicious activity related to the affected application or component.
• Apply compensating controls or temporarily remove exposure until a vendor fix is available.

Technical summary

Capgo (capgo.app) exposes the legacy membership table public.org_users directly through Supabase PostgREST. The table's row-level security policies "Allow org admin to insert" and "Allow org admin to update" only verify that the caller has admin rights in the target organization (public.check_min_rights('admin', …)); they do not require a pending invitation in tmp_users, acceptance of an invite token via /private/accept_invitation, any action by the target user, or the membership/role-consistency and anti-escalation checks enforced by the RBAC role-binding path. As a result, an authenticated user who is an admin of an organization can INSERT or UPDATE org_users rows directly to add any existing public.users account as an active member of that organization with user_right="admin", bypassing the invitation and role-assignment workflow entirely. In testing, an account with no prior access to the organization or its apps could, after such a direct insert, read the organization and app and pass check_min_rights. All versions are affected and no patch was available at the time of publication.

View the official NVD record for CVE-2026-100623

CVE data is sourced from NVD/CNA records and optional enrichment. Validate against the vendor advisory before taking production action.