CVE-2026-100627 (GCVE-0-2026-100627)
Vulnerability from cvelistv5
Published
2026-09-26 13:23
Modified
2026-09-30 17:20
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
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 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.
Impacted products
Vendor Product Version
Cap-go capgo.app Version: 0   <
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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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