---
id: CVE-2026-100627
title: >-
  Capgo (Cap-go/capgo.app) server backend Supabase functions contain an
  incorrect authorization flaw in the API-key bundle promotion path
summary: >-
  Capgo (Cap-go/capgo.app) server backend Supabase functions contain an
  incorrect authorization flaw in the API-key bundle promotion path. The PUT
  /bundle endpoint, available to "all" and "write" API keys, dispatches to
  setChannel, which a…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'
cwe:
  - CWE-639
vendor: Cap-go
product: capgo.app
affected:
  - capgo.app
published: '2026-09-26'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T14:16:43.837'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100627'
references:
  - url: >-
      https://github.com/Cap-go/capgo.app/security/advisories/GHSA-633x-9x77-77gf
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/capgo-bundle-promotion-api-channel-rbac-deny-override-bypass
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-26T13:33:20.926Z'
---

## Overview

Capgo (Cap-go/capgo.app) server backend Supabase functions contain an incorrect authorization flaw in the API-key bundle promotion path. The PUT /bundle endpoint, available to "all" and "write" API keys, dispatches to setChannel, which authorizes with checkPermission(c, 'channel.promote_bundle', { appId: body.app_id }) and omits the request's channel_id. Because the omitted scope field is passed to rbac_check_permission_direct as SQL NULL, and channel-scope override evaluation is gated on p_channel_id IS NOT NULL, per-channel allow/deny overrides are never evaluated. A principal holding app-level channel.promote_bundle (granted by default to the app_developer and app_uploader roles) can therefore promote a bundle to a channel for which an explicit per-channel deny override exists, updating public.channels.version for the supplied channel_id; the target channel is only validated after authorization. The issue is confirmed on main at commit de66fa51e7ff2f50283cc1455c3d80ab3eb0ae43 and likely earlier versions; no patched version is known at the time of publication.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.