{"id":"CVE-2026-100623","title":"Capgo (capgo.app) exposes the legacy membership table public.org_users directly through Supabase PostgREST","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 h…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-863"],"vendor":"Cap-go","product":"capgo.app","affected":["capgo.app"],"published":"2026-09-26","updated":"2026-09-30","sourceUpdated":"2026-09-30T18:18:00.610","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100623","references":[{"url":"https://github.com/Cap-go/capgo.app/security/advisories/GHSA-w349-9mc3-8c5x","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/capgo-authentication-bypass-via-direct-postgrest-org-users-table-write","label":"disclosure@vulncheck.com"},{"url":"https://github.com/Cap-go/capgo.app/security/advisories/GHSA-w349-9mc3-8c5x","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00407,"epssPercentile":0.34772,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-09-28T16:59:45.447735Z"},"ingestedAt":"2026-09-26T13:33:20.927Z","slug":"CVE-2026-100623","body":"## Overview\n\nCapgo (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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":60,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":212041,"id":"CVE-2026-100623","ts":1790615856878,"field":"exploit_available","old":"false","new":"true"}]}