{"id":"CVE-2025-56648","aliases":["CLSA-2026-1793296891","EUVD-2025-29779","GHSA-qm9p-f9j5-w83w"],"status":"published","title":"Parcel has an Origin Validation Error vulnerability","description":"npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00236,"percentile":0.14746,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-346"],"published":"2025-09-17T00:00:00Z","modified":"2026-10-30T02:15:04Z","fixes":[{"ecosystem":"npm","package":"@parcel/reporter-dev-server","fixed_in":["2.16.4"],"sources":["ghsa","osv"]},{"ecosystem":"TuxCare:npm","package":"@parcel/reporter-dev-server","fixed_in":["2.8.3-tuxcare.1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@parcel/reporter-dev-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.6.1"},{"last_affected":"2.16.3"},{"fixed":"2.16.4"}]}]},{"source":"osv","ecosystem":"TuxCare:npm","package":"@parcel/reporter-dev-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.8.3-tuxcare.0"},{"fixed":"2.8.3-tuxcare.1"}]}],"versions":["2.8.3"]},{"source":"osv","ecosystem":"npm","package":"@parcel/reporter-dev-server","ranges":[{"type":"SEMVER","events":[{"introduced":"1.6.1"},{"fixed":"2.16.4"}]}]}],"products":[{"vendor":"parceljs","product":"parcel"}],"references":[{"url":"https://gist.github.com/R4356th/41f468def606b2406e36f7193f5322b8","tags":["Exploit","web"]},{"url":"https://github.com/parcel-bundler/parcel/discussions/10089","tags":["Issue Tracking","web"]},{"url":"https://github.com/parcel-bundler/parcel/issues/10216","tags":["Exploit","Issue Tracking","report","web"]},{"url":"https://github.com/parcel-bundler/parcel/commit/4bc56e3242a85491c7edf589966e9b44c6330c49","tags":["fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-56648","tags":["advisory"]},{"url":"https://github.com/parcel-bundler/parcel/pull/10138","tags":["web"]},{"url":"https://github.com/parcel-bundler/parcel/commit/9e2f6f1377123cff3b82f6dde4e20336efc846a1","tags":["web"]},{"url":"https://github.com/advisories/GHSA-qm9p-f9j5-w83w"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/56xxx/CVE-2025-56648.json","tags":["advisory"]},{"url":"https://github.com/parcel-bundler/parcel","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2025-56648","description":"npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them.","status":"published","published":"2025-09-17T00:00:00Z","modified":"2026-01-26T16:10:49.47Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:32:26.64278Z"}],"euvd":[{"id":"EUVD-2025-29779","description":"npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them.","status":"published","published":"2025-09-17T00:00:00Z","modified":"2026-01-26T16:10:49Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T19:48:47.68467Z"}],"ghsa":[{"id":"GHSA-qm9p-f9j5-w83w","title":"Parcel has an Origin Validation Error vulnerability","description":"parcel versions 1.6.1 and above have an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them. Version 2.16.4 supports a `--no-cors` option which disables CORS headers in the dev server.","status":"published","published":"2025-09-17T21:30:42Z","modified":"2026-04-13T18:49:41Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:39:53.087746Z"}],"nvd":[{"id":"CVE-2025-56648","description":"npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them.","status":"published","published":"2025-09-17T19:15:46.963Z","modified":"2026-06-17T09:42:42.74Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:11:29.650057Z"}],"osv":[{"id":"CVE-2025-56648","description":"npm parcel 2.0.0-alpha and before has an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them.","status":"published","published":"2025-09-17T00:00:00Z","modified":"2026-10-28T02:30:24.525718998Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:51.190588Z"},{"id":"GHSA-qm9p-f9j5-w83w","title":"Parcel has an Origin Validation Error vulnerability","description":"parcel versions 1.6.1 and above have an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them. Version 2.16.4 supports a `--no-cors` option which disables CORS headers in the dev server.","status":"published","published":"2025-09-17T21:30:42Z","modified":"2026-04-13T19:02:07.652067Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T15:46:54.760124Z"},{"id":"CLSA-2026-1793296891","title":"TuxCare security update for @parcel/reporter-dev-server (1 CVE)","description":"TuxCare rebuilt @parcel/reporter-dev-server to address 1 CVE. Fixed in 2.8.3-tuxcare.1.","status":"published","published":"2026-10-29T19:01:32Z","modified":"2026-10-30T02:15:04.452069247Z","updated_at":"2026-11-02T15:43:55.669514Z"}]}}