{"schema_version":"1.7.5","id":"CVE-2021-33502","published":"2021-05-24T16:15:08.133Z","modified":"2026-07-08T06:02:34.705646636Z","aliases":["GHSA-px4h-xg32-q955"],"related":["ALSA-2021:5171","ALSA-2022:0350","ALSA-2022:6595"],"details":"The normalize-url package before 4.5.1, 5.x before 5.3.1, and 6.x before 6.0.1 for Node.js has a ReDoS (regular expression denial of service) issue because it has exponential performance for data: URLs.","affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/sindresorhus/normalize-url","events":[{"introduced":"b98fe7e378441b83c30b2d6fb70645eeec61bbc7"},{"last_affected":"b98fe7e378441b83c30b2d6fb70645eeec61bbc7"},{"fixed":"305e3f22efb87505d3bc87c17c50b1ef67789acb"}],"database_specific":{"cpe":"cpe:2.3:a:normalize-url_project:normalize-url:6.0.0:*:*:*:*:node.js:*:*","extracted_events":[{"introduced":"6.0.0"},{"last_affected":"6.0.0"}],"source":["CPE_STRING","REFERENCES"]}}],"versions":["6.0.0","v6.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-33502.json"}}],"references":[{"type":"ADVISORY","url":"https://github.com/sindresorhus/normalize-url/releases/tag/v6.0.1"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210706-0001/"}],"database_specific":{"unresolved_ranges":[{"cpes":["cpe:2.3:a:normalize-url_project:normalize-url:*:*:*:*:*:node.js:*:*"],"extracted_events":[{"introduced":"4.3.0"},{"fixed":"4.5.1"},{"introduced":"5.0.0"},{"fixed":"5.3.1"}],"source":"CPE_RANGE","vendor_product":"normalize-url_project:normalize-url"}]},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}