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A <code>style</code> or <code>script</code> element inside SVG or MathML foreign content is parsed with character references decoded, but is serialized as an HTML raw-text element, so its text is emitted unescaped. Encoded markup such as <code>&amp;lt;/style&amp;gt;&amp;lt;img src=x onerror=...&amp;gt;</code> inside <code>&lt;svg&gt;&lt;style&gt;</code> therefore closes the element on re-parse and becomes live markup. Applications that parse untrusted HTML with lazy_html, filter the document or tree, and serialize it for display are affected, since the payload is a plain text node that no element or attribute filter sees.</p>\n<p>This issue affects lazy_html: from 0.1.0 before 0.1.13.</p>"},{"base64":false,"type":"text/markdown","value":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in dashbitco lazy_html allows mutation XSS via a parse and serialize round-trip of attacker-supplied HTML.\n\n`LazyHTML.to_html/2` and `LazyHTML.Tree.to_html/2` decide whether to escape an element's text from its tag name alone. A `style` or `script` element inside SVG or MathML foreign content is parsed with character references decoded, but is serialized as an HTML raw-text element, so its text is emitted unescaped. Encoded markup such as `&lt;/style&gt;&lt;img src=x onerror=...&gt;` inside `<svg><style>` therefore closes the element on re-parse and becomes live markup. Applications that parse untrusted HTML with lazy_html, filter the document or tree, and serialize it for display are affected, since the payload is a plain text node that no element or attribute filter sees.\n\nThis issue affects lazy_html: from 0.1.0 before 0.1.13."}],"value":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in dashbitco lazy_html allows mutation XSS via a parse and serialize round-trip of attacker-supplied HTML.\n\nLazyHTML.to_html/2 and LazyHTML.Tree.to_html/2 decide whether to escape an element's text from its tag name alone. A style or script element inside SVG or MathML foreign content is parsed with character references decoded, but is serialized as an HTML raw-text element, so its text is emitted unescaped. Encoded markup such as &lt;/style&gt;&lt;img src=x onerror=...&gt; inside <svg><style> therefore closes the element on re-parse and becomes live markup. Applications that parse untrusted HTML with lazy_html, filter the document or tree, and serialize it for display are affected, since the payload is a plain text node that no element or attribute filter sees.\n\nThis issue affects lazy_html: from 0.1.0 before 0.1.13."}],"impacts":[{"capecId":"CAPEC-63","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>An attacker who can submit HTML to an application that sanitizes it with lazy_html can run script in the browsers of users who view the sanitized output.</p>"},{"base64":false,"type":"text/markdown","value":"An attacker who can submit HTML to an application that sanitizes it with lazy_html can run script in the browsers of users who view the sanitized output."}],"value":"An attacker who can submit HTML to an application that sanitizes it with lazy_html can run script in the browsers of users who view the sanitized 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