{"cve":"CVE-2021-3803","nvd":{"published":"2021-09-17T07:15:09.153","modified":"2026-06-17T04:05:47.910","status":"Modified","description":"nth-check is vulnerable to Inefficient Regular Expression Complexity","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:N/A:H","score":7.5},"cwes":["CWE-1333"],"references":["https://github.com/fb55/nth-check/commit/9894c1d2010870c351f66c6f6efcf656e26bb726","https://huntr.dev/bounties/8cf8cc06-d2cf-4b4e-b42c-99fafb0b04d0","https://lists.debian.org/debian-lts-announce/2023/05/msg00023.html","https://github.com/fb55/nth-check/commit/9894c1d2010870c351f66c6f6efcf656e26bb726","https://huntr.dev/bounties/8cf8cc06-d2cf-4b4e-b42c-99fafb0b04d0"],"products":["debian:debian_linux","nth-check_project:nth-check"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-3803","score":0.02206,"percentile":0.8257,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-rp65-9cf3-cjxr","url":"https://osv.dev/vulnerability/GHSA-rp65-9cf3-cjxr","summary":"Inefficient Regular Expression Complexity in nth-check","modified":"2026-09-10T03:49:08.829841257Z","packages":[{"ecosystem":"npm","name":"nth-check","purl":"pkg:npm/nth-check","ranges":["<2.0.1"],"fixed":["2.0.1"]}]}],"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."]}