{"id":"CVE-2026-111758","revision":"083e5d0d899147199c5abee90eb3fd4f","records":[{"revision":"083e5d0d899147199c5abee90eb3fd4f","observedAt":"2026-10-29T05:48:28.56+00:00","statement":{"source":"nvd","id":"CVE-2026-111758","aliases":[],"title":"markdown-it is a Markdown parser. From versions 14.1.0 to before 14.3.3, and 15.0.0 to before 15.0.3, a link reference definition whose label or title is never closed is O(n²) with default options. Continuation lines are pulled lazily with …","description":"markdown-it is a Markdown parser. From versions 14.1.0 to before 14.3.3, and 15.0.0 to before 15.0.3, a link reference definition whose label or title is never closed is O(n²) with default options. Continuation lines are pulled lazily with str += lineContent in src/rules_block/reference.ts, and the subsequent charCodeAt and slice calls flatten the V8 cons-string, copying everything collected so far; this runs before the rule decides the definition is invalid. No options are required to trigger it. This issue has been patched in versions 14.3.3 and 15.0.3.","state":0,"publishedAt":"2026-10-20T21:17:17.11+00:00","modifiedAt":"2026-10-28T17:17:39.977+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/markdown-it/markdown-it/commit/48fbc465812c440020c663f040ab22deaf8f1eca","https://github.com/markdown-it/markdown-it/commit/d99f48839d37af6fd8a2617516c43dab90755503","https://github.com/markdown-it/markdown-it/releases/tag/14.3.3","https://github.com/markdown-it/markdown-it/releases/tag/15.0.3","https://github.com/markdown-it/markdown-it/security/advisories/GHSA-gfr2-rv44-r23c"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-111758","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-400","CWE-407"],"productCriteria":[],"sourceDates":{"published":"2026-10-20T21:17:17.110","lastModified":"2026-10-28T17:17:39.977"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-111758","identifiers":["CVE-2026-111758"]},"retained":false,"historicalAffected":[]}],"coverage":[]}