{"cve":"CVE-2025-56648","nvd":{"published":"2025-09-17T19:15:46.963","modified":"2026-06-17T09:42:42.740","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-346"],"references":["https://gist.github.com/R4356th/41f468def606b2406e36f7193f5322b8","https://github.com/parcel-bundler/parcel/commit/4bc56e3242a85491c7edf589966e9b44c6330c49","https://github.com/parcel-bundler/parcel/discussions/10089","https://github.com/parcel-bundler/parcel/issues/10216"],"products":["parceljs:parcel"],"source":"nvd","synced_at":"2026-10-19T22:10:08.713834912+00:00"},"epss":{"cve":"CVE-2025-56648","score":0.00236,"percentile":0.14664,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qm9p-f9j5-w83w","url":"https://osv.dev/vulnerability/GHSA-qm9p-f9j5-w83w","summary":"Parcel has an Origin Validation Error vulnerability","modified":"2026-04-13T19:02:07.652067Z","packages":[{"ecosystem":"npm","name":"@parcel/reporter-dev-server","purl":"pkg:npm/%40parcel/reporter-dev-server","ranges":[">=1.6.1 <2.16.4"],"fixed":["2.16.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}