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Syntax-tree Mdast-util-to-hast vulnerabilities

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Published CVEs affecting Syntax-tree Mdast-util-to-hast: 1 record(s), with affected versions and fixes.

CVE-2025-66400 Medium · 5.3 CWE-20 Dec 1, 2025
mdast-util-to-hast unsanitized class attribute
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.