CVE-2026-41067

Astro is a web framework. Prior to 6.1.6, the defineScriptVars function in Astro's server-side rendering pipeline uses a case-sensitive regex /<\/script>/g to sanitize values injected into inline <script> tags via the define:vars directive. HTML parsers close <script> elements case-insensitively and also accept whitespace or / before the closing >, allowing an attacker to bypass the sanitization with payloads like </Script>, </script >, or </script/> and inject arbitrary HTML/JavaScript. This vulnerability is fixed in 6.1.6.

The following products are affected by CVE-2026-41067 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-41067.

URL	Resource
https://github.com/withastro/astro/security/advisories/GHSA-j687-52p2-xcff