GHSA-f5ww-cq3m-q3g7 Sanitize vulnerable to Cross-site Scripting via insufficient neutralization of `style` element content

• RubyGems sanitize: >= 3.0.0, < 6.0.2 → fixed in 6.0.2

Impact Using carefully crafted input, an attacker may be able to sneak arbitrary HTML and CSS through Sanitize `>= 3.0.0, = 6.0.2` performs additional escaping of CSS in `style` element content, which fixes this issue. Workarounds Users who are unable to upgrade can prevent this issue by using a Sanitize config that doesn't allow `style` elements, using a Sanitize config that doesn't allow CSS at-rules, or by manually escaping the character sequence `</` as `<\/` in `style` element content. Credit This issue was found by @cure53 during an audit of a project that uses Sanitize and was reported by one of that project's maintainers. Thank you!