GHSA-4FH9-H7WG-Q85M mdast-util-to-hast has unsanitized class attribute

Impact 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. The following markdown: markdown jsxss Would create If your page then applied .xss classes or...

CVE-2025-66400 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...