Titus Wormer

3 exploits Active since Sep 2021
CVE-2025-66400 WRITEUP MEDIUM WRITEUP
mdast-util-to-hast <13.2.1 - Info Disclosure
mdast-util-to-hast is an mdast utility to transform to hast. From 13.0.0 to before 13.2.1, multiple (unprefixed) classnames could be added in markdown source by using character references. This could make rendered user supplied markdown code elements appear like the rest of the page. This vulnerability is fixed in 13.2.1.
CVSS 5.3
CVE-2021-39199 WRITEUP CRITICAL WRITEUP
remark-html < 13.0.2 - Cross-Site Scripting via Unsanitized HTML Input
remark-html is an open source nodejs library which compiles Markdown to HTML. In affected versions the documentation of remark-html has mentioned that it was safe by default. In practice the default was never safe and had to be opted into. That is, user input was not sanitized. This means arbitrary HTML can be passed through leading to potential XSS attacks. The problem has been patched in 13.0.2 and 14.0.1: `remark-html` is now safe by default, and the implementation matches the documentation. On older affected versions, pass `sanitize: true` if you cannot update.
CVSS 10.0
CVE-2025-66400 WRITEUP MEDIUM WRITEUP
mdast-util-to-hast <13.2.1 - Info Disclosure
mdast-util-to-hast is an mdast utility to transform to hast. From 13.0.0 to before 13.2.1, multiple (unprefixed) classnames could be added in markdown source by using character references. This could make rendered user supplied markdown code elements appear like the rest of the page. This vulnerability is fixed in 13.2.1.
CVSS 5.3