Vendor
Markdown-It vulnerabilities
Updated . Rebuilt every hour.
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.
- Last 7 days
- 0
- Last 90 days
- 3
- Critical, all time
- 0
- Exploited in the wild
- 0
About Markdown-It
JavaScript project providing a markdown parser and renderer library with extensible plugin support.
Markdown-It technologies
Latest Markdown-It vulnerabilities
- CVE-2026-111758: markdown-it quadratic-time rendering of unclosed link referencehighCVSS 7.5EPSS 0.5%
- CVE-2026-111759: markdown-it quadratic ReDoS in smartquoteshighCVSS 7.5EPSS 0.6%
- markdown-it quadratic performance degradation in linkify processingmedium
- CVE-2026-48801: markdown-it linkify-it Denial of Service via Quadratic Complexity in match loophighCVSS 4EPSS 0.5%
- CVE-2026-59887: markdown-it linkify-it quadratic complexity DoS in mailto validatorhighCVSS 7.5EPSS 0.6%
- CVE-2026-48988: markdown-it denial of service in smartquotes rulemediumCVSS 5.3EPSS 0.4%
- CVE-2026-2327: markdown-it ReDoS in linkify regexlowCVSS 3.1EPSS 0.7%
- CVE-2015-10005: markdown-it inefficient regular expression complexitylowCVSS 3.1EPSS 0.9%
- CVE-2022-21670: markdown-it denial of service via regex backtrackinglowCVSS 3.1EPSS 2.2%
Most severe Markdown-It vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-59887: markdown-it linkify-it quadratic complexity DoS in mailto validatorhighCVSS 7.5EPSS 0.6%
- CVE-2026-111759: markdown-it quadratic ReDoS in smartquoteshighCVSS 7.5EPSS 0.6%
- CVE-2026-111758: markdown-it quadratic-time rendering of unclosed link referencehighCVSS 7.5EPSS 0.5%
- CVE-2026-48801: markdown-it linkify-it Denial of Service via Quadratic Complexity in match loophighCVSS 4EPSS 0.5%
- CVE-2026-48988: markdown-it denial of service in smartquotes rulemediumCVSS 5.3EPSS 0.4%
- markdown-it quadratic performance degradation in linkify processingmedium
- CVE-2022-21670: markdown-it denial of service via regex backtrackinglowCVSS 3.1EPSS 2.2%
- CVE-2015-10005: markdown-it inefficient regular expression complexitylowCVSS 3.1EPSS 0.9%
- CVE-2026-2327: markdown-it ReDoS in linkify regexlowCVSS 3.1EPSS 0.7%
Vulnerabilities per week
2 vulnerabilities in the last four weeks, up 100% on the four before (1). The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 1 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 2 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Markdown-It vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/markdown-it)<a href="https://junglewise.ai/threats/vendors/markdown-it"><img src="https://junglewise.ai/threats/vendors/markdown-it/badge.svg" alt="Markdown-It vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/markdown-it.json, and this page as text at https://junglewise.ai/threats/vendors/markdown-it.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Markdown-It vulnerabilities", https://junglewise.ai/threats/vendors/markdown-it, 9 November 2026.