XSS in Withastro Astro

CVE-2026-59729

Astro is a web framework for content-driven websites. Versions prior to 7.0.6 are vulnerable to XSS through unescaped spread attribute names in renderHTMLElement. The fix for CVE-2026-54298 (GHSA-jrpj-wcv7-9fh9) added an INVALID_ATTR_NAME_…

Vulnerability class: XSS (Cross-Site Scripting)

Affected products

Weakness classification (CWE)

References