{"cve":"CVE-2021-27515","nvd":{"published":"2021-02-22T00:15:12.543","modified":"2026-06-17T03:45:00.447","status":"Modified","description":"url-parse before 1.5.0 mishandles certain uses of backslash such as http:\\/ and interprets the URI as a relative path.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":[],"references":["https://advisory.checkmarx.net/advisory/CX-2021-4306","https://github.com/unshiftio/url-parse/commit/d1e7e8822f26e8a49794b757123b51386325b2b0","https://github.com/unshiftio/url-parse/compare/1.4.7...1.5.0","https://github.com/unshiftio/url-parse/pull/197","https://lists.debian.org/debian-lts-announce/2023/02/msg00030.html"],"products":["url-parse_project:url-parse"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2021-27515","score":0.01964,"percentile":0.80348,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-9m6j-fcg5-2442","url":"https://osv.dev/vulnerability/GHSA-9m6j-fcg5-2442","summary":"Path traversal in url-parse","modified":"2026-02-03T22:20:02.973371Z","packages":[{"ecosystem":"npm","name":"url-parse","purl":"pkg:npm/url-parse","ranges":[">=0.1.0 <1.5.0"],"fixed":["1.5.0"]}]}],"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."]}