{"id":"CVE-2021-43308","aliases":["GHSA-mmh6-m7v9-5956"],"url":"https://o3.security/vulnerability/CVE-2021-43308","summary":"Regular expression denial of service in markdown-link-extractor","details":"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","published":"2022-06-02T14:15:31.047Z","modified":"2026-07-09T05:45:32.067959Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"markdown-link-extractor","fixedVersion":"3.0.2"},{"ecosystem":"npm","name":"markdown-link-extractor","fixedVersion":"4.0.1"}],"fix":null,"references":[{"type":"EVIDENCE","url":"https://research.jfrog.com/vulnerabilities/markdown-link-extractor-redos-xray-211350/"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T05:45:32.067959Z"}}