{"schema":"threatline.record/2","record":{"id":"CVE-2026-100627","aliases":["GHSA-633x-9x77-77gf"],"summary":"Capgo bundle promotion API channel RBAC deny override bypass","details":"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.","categories":["Unclassified"],"product":"capgo.app","vendor":"Cap-go","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-100627","source_modified_at":"2026-09-30T17:20:12.880Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"capgo.app","vendor":"Cap-go","versions":[{"version":"0","status":"affected","versionType":"custom","lessThanOrEqual":"*"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":7.2,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00295,"percentile":0.20973,"score_date":"2026-10-23"},"published_at":"2026-09-26T13:23:04.377Z","modified_at":"2026-09-30T17:20:12.880Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-100627","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-30T17:20:12.880Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-100627","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/Cap-go/capgo.app/security/advisories/GHSA-633x-9x77-77gf","tags":["exploit"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/capgo-bundle-promotion-api-channel-rbac-deny-override-bypass","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"total","assessed_at":"2026-09-28T18:56:30.677663Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-09-30T17:20:12.880Z","content_hash":"62d7dfdc3333fa8064f4f8e7c4449476ba701a44036e2f7a7eba0a9bef6dfca5"}}