{"schema":"threatline.record/2","record":{"id":"CVE-2026-100625","aliases":["GHSA-r45q-x4gr-3mvv"],"summary":"Capgo Build Upload Proxy Authorization Bypass via TUS Resource","details":"Capgo (capgo.app) exposes a native build TUS upload proxy (supabase/functions/_backend/public/build/upload.ts) that authorizes a caller against a single build job identified by the supplied builder_job_id and validates only that job's stored upload_path, but then forwards the user-controlled TUS resource suffix taken from /build/upload/:jobId/* to the builder service while injecting Capgo's privileged builder API key. Because the forwarded suffix is never bound to the authorized job's upload_path or upload_session_key, a caller holding a valid 'all' or 'write' Capgo API key with app.build_native permission for one application can use its authorized proxy path for job A to write to the TUS upload resource of another job B, provided that resource suffix is known or exposed, corrupting that build's artifacts. All versions are affected; no patch was available at the time of advisory 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-2026-100625","source_modified_at":"2026-09-30T17:20:12.129Z","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":8.7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00252,"percentile":0.15786,"score_date":"2026-10-23"},"published_at":"2026-09-26T13:23:03.030Z","modified_at":"2026-09-30T17:20:12.129Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-100625","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-30T17:20:12.129Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-100625","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-r45q-x4gr-3mvv","tags":["exploit"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/capgo-build-upload-proxy-authorization-bypass-via-tus-resource","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":"partial","assessed_at":"2026-09-30T12:57:03.291979Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-09-30T17:20:12.129Z","content_hash":"02db326e9890411ef5dd6530e3c81931066e56dbf4a4197f1cc546afe50e5135"}}