CVE-2026-84376 — Astro: Authorization bypass from missing path-segment boundary check when stripping the configured base
Astro is a web framework for content-driven websites. Prior to 7.2.4, Astro stripped a configured non-root base path from request pathnames using a string-prefix check without v…
Published: 2026-09-02 · CVSS: 6.3 · CVSS 4.0
Astro is a web framework for content-driven websites. Prior to 7.2.4, Astro stripped a configured non-root base path from request pathnames using a string-prefix check without verifying a path-segment boundary. With base "/app", a request to "/appX/admin" resolved internally to the protected "/admin" route while middleware observed "/appX/admin" in context.url.pathname. In applications that authorize base-prefixed routes by inspecting context.url.pathname, an unauthenticated remote attacker could bypass pathname-based middleware authorization and reach protected routes. This issue is fixed in version 7.2.4.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7