Detections
Analytics
CVE-2026-111759
high
Description
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 applications processing untrusted input. Many opening double quotes followed by unmatched closing single quotes cause repeated scans of the entire opener stack. The same issue occurs with the quote types reversed. The default configuration (typographer: false) is not affected, but this option is enabled with high probability. This issue is fixed in versions 14.3.2 and 15.0.2.
References
https://github.com/markdown-it/markdown-it/security/advisories/GHSA-r7fv-28h4-cvq7
https://github.com/markdown-it/markdown-it/releases/tag/15.0.2
https://github.com/markdown-it/markdown-it/releases/tag/14.3.2
https://github.com/markdown-it/markdown-it/commit/daf5a3c32303e5d9de01b12eeb725fb5990b8162
https://github.com/markdown-it/markdown-it/commit/cf27366035edf9196667110c47d9d67b030a4152
https://github.com/markdown-it/markdown-it/commit/1b379c1b6d0522421bd1a51b77337c79af2c8670