{"schema":"threatline.record/2","record":{"id":"CVE-2026-102878","aliases":[],"summary":"mcp-chrome-bridge through 1.0.31 CORS Origin Bypass","details":"mcp-chrome-bridge through 1.0.31 contains an origin validation error in the native-server HTTP API that allows attackers to bypass CORS restrictions. Attackers can craft malicious web pages that make cross-origin requests to the local server and invoke browser automation tools including script execution, page content reading, and screenshot capture.","categories":["Applications & CMS"],"product":"mcp-chrome-bridge","vendor":"hangwin","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102878","source_modified_at":"2026-09-29T20:19:14.663Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"mcp-chrome-bridge","vendor":"hangwin","versions":[{"version":"0","status":"affected","versionType":"custom","lessThanOrEqual":"1.0.31"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":8.6,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00235,"percentile":0.13637,"score_date":"2026-10-23"},"published_at":"2026-09-29T20:01:07.610Z","modified_at":"2026-09-29T20:19:14.663Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-102878","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-09-29T20:19:14.663Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-102878","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/hangwin/mcp-chrome/issues/384","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/hangwin/mcp-chrome/blob/v1.0.0/app/native-server/src/server/index.ts","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/hangwin/mcp-chrome","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/mcp-chrome-bridge-through-1.0.31-cors-origin-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":"2026-09-29T20:18:47.075987Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-09-29T20:19:14.663Z","content_hash":"0b963fa6a784c84ef89d8269b9811bb6d76b53b5577f4907fbc03746817597b4"}}