markdown-it
npm7 known CVEs affecting this package
Aggregated from OSV, GitHub Security Advisories, NVD, and vendor advisories. Each CVE links to its full detail page with vendor advisories, patches, fixed versions, and remediation guidance.
CVEs affecting markdown-itpage 1 of 1
- CVE-2015-10005HIGHCVSS 3.5EG 7.5fixed in 3.0.02022-12-27
A vulnerability was found in markdown-it up to 2.x. It has been classified as problematic. Affected is an unknown function of the file lib/common/html_re.js. The manipulation leads to inefficient regular expression complexity. Upgrading to…
- CVE-2022-21670MEDIUMCVSS 5.3EG 5.3fixed in 12.3.22022-01-10
markdown-it is a Markdown parser. Prior to version 1.3.2, special patterns with length greater than 50 thousand characterss could slow down the parser significantly. Users should upgrade to version 12.3.2 to receive a patch. There are no k…
- CVE-2026-111758HIGHCVSS 7.5EG 7.5fixed in 14.3.3 or 15.0.3, by version range2026-10-20
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 wit…
- CVE-2026-111759HIGHCVSS 7.5EG 7.5fixed in 15.0.2 or 14.3.2, by version range2026-10-19
markdown-it is a Markdown parser. Prior to 14.3.2 and 15.0.2, when typographer: true is enabled, specially crafted Markdown can cause quadratic processing time in the smartquotes rule, potentially leading to denial of service in applicatio…
- CVE-2026-111766LOWCVSS 3.7EG 3.7fixed in 14.3.3 or 15.0.3, by version range2026-10-19
markdown-it is a Markdown parser. Prior to 14.3.3 and 15.0.3, when the html option or commonmark preset is enabled and the constructs occur inside a paragraph, attacker-controlled Markdown containing repeated unterminated inline HTML comme…
- CVE-2026-2327HIGHCVSS 7.5EG 7.5fixed in 14.1.12026-02-12
Versions of the package markdown-it from 13.0.0 and before 14.1.1 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the use of the regex /\*+$/ in the linkify function. An attacker can supply a long sequence of * charac…
- CVE-2026-48988MEDIUMCVSS 5.3EG 5.3fixed in 14.2.02026-06-15
markdown-it is a Markdown parser. Versions 14.1.1 and below contain a denial-of-service vulnerability when typographer: true is enabled, due to quadratic (O(n^2)) processing in the smartquotes rule. The issue stems from repeatedly modifyin…
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