{"cve":"CVE-2021-43308","nvd":{"published":"2022-06-02T14:15:31.047","modified":"2026-06-17T04:10:49.703","status":"Modified","description":"An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the markdown-link-extractor npm package, when an attacker is able to supply arbitrary input to the module's exported function","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://research.jfrog.com/vulnerabilities/markdown-link-extractor-redos-xray-211350/","https://research.jfrog.com/vulnerabilities/markdown-link-extractor-redos-xray-211350/"],"products":["markdown-link-extractor_project:markdown-link-extractor"],"source":"nvd","synced_at":"2026-10-19T21:31:59.322382750+00:00"},"epss":{"cve":"CVE-2021-43308","score":0.01097,"percentile":0.65634,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-mmh6-m7v9-5956","url":"https://osv.dev/vulnerability/GHSA-mmh6-m7v9-5956","summary":"Regular expression denial of service in markdown-link-extractor","modified":"2023-11-08T04:07:09.665423Z","packages":[{"ecosystem":"npm","name":"markdown-link-extractor","purl":"pkg:npm/markdown-link-extractor","ranges":["<3.0.2"],"fixed":["3.0.2"]},{"ecosystem":"npm","name":"markdown-link-extractor","purl":"pkg:npm/markdown-link-extractor","ranges":[">=4.0.0 <4.0.1"],"fixed":["4.0.1"]}]}],"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."]}