{"id":"CVE-2026-18825","aliases":["EUVD-2026-88239","GHSA-8f76-923c-xvfq"],"status":"published","title":"Origin validation error in the connect-xcors npm package","description":"An Origin Validation Error in the middleware of the connect-xcors npm package allows an attacker to bypass origin verification and perform a cross domain authenticated request.","severity":{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00175,"percentile":0.07081,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-346"],"published":"2026-09-28T12:32:17Z","modified":"2026-10-05T08:18:27Z","products":[{"vendor":"github.com/antono","product":"connect-cors"}],"references":[{"url":"https://www.thalesgroup.com/en/search/cybersecurity/cybersecurity-services/cve-2026-18825"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-18825"},{"url":"https://cds.thalesgroup.com/en/tcs-cert/CVE-2026-18825"},{"url":"https://github.com/advisories/GHSA-8f76-923c-xvfq"}],"sources":{"cve":[{"id":"CVE-2026-18825","title":"Origin validation error in the connect-xcors npm package","description":"An Origin Validation Error in the middleware of the connect-xcors npm package allows an attacker to bypass origin verification and perform a cross domain authenticated request.","status":"published","published":"2026-09-28T12:32:17.883Z","modified":"2026-10-05T08:18:27.986Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:20:12.260247Z"}],"euvd":[{"id":"EUVD-2026-88239","description":"An Origin Validation Error in the middleware of the connect-xcors npm package allows an attacker to bypass origin verification and perform a cross domain authenticated request.","status":"published","published":"2026-09-28T12:32:17Z","modified":"2026-10-05T08:18:27Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T17:27:40.640907Z"}],"ghsa":[{"id":"GHSA-8f76-923c-xvfq","title":"An Origin Validation Error in the middleware of the connect-xcors npm package allows an attacker...","description":"An Origin Validation Error in the middleware of the connect-xcors npm package allows an attacker to bypass origin verification and perform a cross domain authenticated request.","status":"published","published":"2026-09-28T15:31:50Z","modified":"2026-09-30T21:31:55Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T15:12:38.770231Z"}],"nvd":[{"id":"CVE-2026-18825","description":"An Origin Validation Error in the middleware of the connect-xcors npm package allows an attacker to bypass origin verification and perform a cross domain authenticated request.","status":"published","published":"2026-09-28T13:17:21.68Z","modified":"2026-09-30T21:17:10.007Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"}],"cwes":["CWE-346"],"updated_at":"2026-11-02T14:12:52.081323Z"}]}}