{"schema_version":1,"title":"Markdown-It vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 9 vulnerabilities in Markdown-It: 0 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-111758, was published on 20 October 2026. 2 vulnerabilities in the last four weeks, up 100% on the four before (1). 1 technology has a page of its own.","url":"https://junglewise.ai/threats/vendors/markdown-it","json_url":"https://junglewise.ai/threats/vendors/markdown-it.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/vendors/markdown-it","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"vendor","thin":false,"counts":{"high":4,"all_time":9,"critical":0,"exploited":0,"last_7_days":0,"last_30_days":2,"last_90_days":3,"last_365_days":7},"latest":[{"cve":"CVE-2026-111758","cvss":7.5,"epss":0.0046,"slug":"cve-2026-111758-markdown-it-quadratic-time-rendering-of-a-single-multi-line-link","title":"markdown-it quadratic-time rendering of unclosed link reference","severity":"high","exploited":false,"published_at":"2026-10-20T21:17:17.11+00:00","url":"https://junglewise.ai/threats/cve-2026-111758-markdown-it-quadratic-time-rendering-of-a-single-multi-line-link"},{"cve":"CVE-2026-111759","cvss":7.5,"epss":0.006,"slug":"cve-2026-111759-markdown-it-is-a-markdown-parser-prior-to-14-3-2-and-15-0-2-when","title":"markdown-it quadratic ReDoS in smartquotes","severity":"high","exploited":false,"published_at":"2026-10-19T18:17:00.57+00:00","url":"https://junglewise.ai/threats/cve-2026-111759-markdown-it-is-a-markdown-parser-prior-to-14-3-2-and-15-0-2-when"},{"slug":"markdown-it-linkify-true-has-two-quadratic-paths-so-a-few-hundred-kb-of-a1cf8480","title":"markdown-it quadratic performance degradation in linkify processing","severity":"medium","exploited":false,"published_at":"2026-09-29T17:57:56+00:00","url":"https://junglewise.ai/threats/markdown-it-linkify-true-has-two-quadratic-paths-so-a-few-hundred-kb-of-a1cf8480"},{"cve":"CVE-2026-48801","cvss":4,"epss":0.0052,"slug":"cve-2026-48801-markdown-it-linkify-it-denial-of-service-via-quadratic-complexity","title":"markdown-it linkify-it Denial of Service via Quadratic Complexity in match loop","severity":"high","exploited":false,"published_at":"2026-07-14T21:17:01.247+00:00","url":"https://junglewise.ai/threats/cve-2026-48801-markdown-it-linkify-it-denial-of-service-via-quadratic-complexity"},{"cve":"CVE-2026-59887","cvss":7.5,"epss":0.0064,"slug":"cve-2026-59887-markdown-it-linkify-it-quadratic-complexity-dos-in-mailto","title":"markdown-it linkify-it quadratic complexity DoS in mailto validator","severity":"high","exploited":false,"published_at":"2026-07-08T17:17:26.883+00:00","url":"https://junglewise.ai/threats/cve-2026-59887-markdown-it-linkify-it-quadratic-complexity-dos-in-mailto"},{"cve":"CVE-2026-48988","cvss":5.3,"epss":0.0043,"slug":"cve-2026-48988-markdown-it-denial-of-service-in-smartquotes-rule","title":"markdown-it denial of service in smartquotes rule","severity":"medium","exploited":false,"published_at":"2026-06-17T21:16:23.563+00:00","url":"https://junglewise.ai/threats/cve-2026-48988-markdown-it-denial-of-service-in-smartquotes-rule"},{"cve":"CVE-2026-2327","cvss":3.1,"epss":0.0068,"slug":"cve-2026-2327-markdown-it-redos-in-linkify-function","title":"markdown-it ReDoS in linkify regex","severity":"low","exploited":false,"published_at":"2026-02-12T06:30:13+00:00","url":"https://junglewise.ai/threats/cve-2026-2327-markdown-it-redos-in-linkify-function"},{"cve":"CVE-2015-10005","cvss":3.1,"epss":0.0095,"slug":"cve-2015-10005-markdown-it-inefficient-regular-expression-complexity","title":"markdown-it inefficient regular expression complexity","severity":"low","exploited":false,"published_at":"2022-12-27T09:30:41+00:00","url":"https://junglewise.ai/threats/cve-2015-10005-markdown-it-inefficient-regular-expression-complexity"},{"cve":"CVE-2022-21670","cvss":3.1,"epss":0.0219,"slug":"cve-2022-21670-markdown-it-denial-of-service-via-regex-backtracking","title":"markdown-it denial of service via regex backtracking","severity":"low","exploited":false,"published_at":"2022-01-12T22:20:22+00:00","url":"https://junglewise.ai/threats/cve-2022-21670-markdown-it-denial-of-service-via-regex-backtracking"}],"vendor":{"hub":true,"name":"Markdown-It","slug":"markdown-it","description":"JavaScript project providing a markdown parser and renderer library with extensible plugin support.","url":"https://junglewise.ai/threats/vendors/markdown-it"},"weekly":[{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-28","critical":0,"exploited":0,"vulnerabilities":1},{"week":"2026-10-05","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-12","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-10-19","critical":0,"exploited":0,"vulnerabilities":2},{"week":"2026-10-26","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-02","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-11-09","critical":0,"exploited":0,"vulnerabilities":0}],"most_severe":[{"cve":"CVE-2026-59887","cvss":7.5,"epss":0.0064,"slug":"cve-2026-59887-markdown-it-linkify-it-quadratic-complexity-dos-in-mailto","title":"markdown-it linkify-it quadratic complexity DoS in mailto validator","severity":"high","exploited":false,"published_at":"2026-07-08T17:17:26.883+00:00","url":"https://junglewise.ai/threats/cve-2026-59887-markdown-it-linkify-it-quadratic-complexity-dos-in-mailto"},{"cve":"CVE-2026-111759","cvss":7.5,"epss":0.006,"slug":"cve-2026-111759-markdown-it-is-a-markdown-parser-prior-to-14-3-2-and-15-0-2-when","title":"markdown-it quadratic ReDoS in smartquotes","severity":"high","exploited":false,"published_at":"2026-10-19T18:17:00.57+00:00","url":"https://junglewise.ai/threats/cve-2026-111759-markdown-it-is-a-markdown-parser-prior-to-14-3-2-and-15-0-2-when"},{"cve":"CVE-2026-111758","cvss":7.5,"epss":0.0046,"slug":"cve-2026-111758-markdown-it-quadratic-time-rendering-of-a-single-multi-line-link","title":"markdown-it quadratic-time rendering of unclosed link reference","severity":"high","exploited":false,"published_at":"2026-10-20T21:17:17.11+00:00","url":"https://junglewise.ai/threats/cve-2026-111758-markdown-it-quadratic-time-rendering-of-a-single-multi-line-link"},{"cve":"CVE-2026-48801","cvss":4,"epss":0.0052,"slug":"cve-2026-48801-markdown-it-linkify-it-denial-of-service-via-quadratic-complexity","title":"markdown-it linkify-it Denial of Service via Quadratic Complexity in match loop","severity":"high","exploited":false,"published_at":"2026-07-14T21:17:01.247+00:00","url":"https://junglewise.ai/threats/cve-2026-48801-markdown-it-linkify-it-denial-of-service-via-quadratic-complexity"},{"cve":"CVE-2026-48988","cvss":5.3,"epss":0.0043,"slug":"cve-2026-48988-markdown-it-denial-of-service-in-smartquotes-rule","title":"markdown-it denial of service in smartquotes rule","severity":"medium","exploited":false,"published_at":"2026-06-17T21:16:23.563+00:00","url":"https://junglewise.ai/threats/cve-2026-48988-markdown-it-denial-of-service-in-smartquotes-rule"},{"slug":"markdown-it-linkify-true-has-two-quadratic-paths-so-a-few-hundred-kb-of-a1cf8480","title":"markdown-it quadratic performance degradation in linkify processing","severity":"medium","exploited":false,"published_at":"2026-09-29T17:57:56+00:00","url":"https://junglewise.ai/threats/markdown-it-linkify-true-has-two-quadratic-paths-so-a-few-hundred-kb-of-a1cf8480"},{"cve":"CVE-2022-21670","cvss":3.1,"epss":0.0219,"slug":"cve-2022-21670-markdown-it-denial-of-service-via-regex-backtracking","title":"markdown-it denial of service via regex backtracking","severity":"low","exploited":false,"published_at":"2022-01-12T22:20:22+00:00","url":"https://junglewise.ai/threats/cve-2022-21670-markdown-it-denial-of-service-via-regex-backtracking"},{"cve":"CVE-2015-10005","cvss":3.1,"epss":0.0095,"slug":"cve-2015-10005-markdown-it-inefficient-regular-expression-complexity","title":"markdown-it inefficient regular expression complexity","severity":"low","exploited":false,"published_at":"2022-12-27T09:30:41+00:00","url":"https://junglewise.ai/threats/cve-2015-10005-markdown-it-inefficient-regular-expression-complexity"},{"cve":"CVE-2026-2327","cvss":3.1,"epss":0.0068,"slug":"cve-2026-2327-markdown-it-redos-in-linkify-function","title":"markdown-it ReDoS in linkify regex","severity":"low","exploited":false,"published_at":"2026-02-12T06:30:13+00:00","url":"https://junglewise.ai/threats/cve-2026-2327-markdown-it-redos-in-linkify-function"}],"generated_at":"2026-11-09T03:07:00.176479+00:00","technologies":[{"name":"Markdown-It","slug":"markdown-it-markdown-it","vulnerabilities":3,"url":"https://junglewise.ai/threats/technologies/markdown-it-markdown-it"}]}