CVE-2026-59730 @astrojs/node: Backslash-prefixed paths not recognized as internal by trailing-slash redirect

Astro is a web framework for content-driven websites. In versions 8.1.0 through 11.0.1, when trailingSlash: 'always' is configured, the @astrojs/node standalone server's static file handler appends a trailing slash to request paths and issues a 301 redirect. Paths beginning with /\ slash-backslas...