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before 0.166.0 Stored XSS via lineAnchors code block option","CVE":"CVE-2026-100691","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"100691","Ordinal":"1","NoteData":"Hugo versions 0.75.0 through 0.165.x contain a stored cross-site scripting vulnerability: the syntax highlighter does not escape the `lineAnchors` option before passing it to Chroma, which writes the value verbatim into the `id` and `href` attributes of the generated line-number markup. 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