CVE-2026-73423

A flaw was found in Astro. The composable astro/hono pipeline can bypass origin checks, which are designed to prevent unauthorized cross-site requests. This occurs because the security.checkOrigin mechanism is not consistently applied when middleware is absent or misordered in the pipeline. A...

CVE-2026-73423 Astro: composable `astro/hono` pipeline bypasses `security.checkOrigin` when `middleware()` is absent or misordered

Astro is a web framework for content-driven websites. From 7.0.0 until 7.0.6, the composable astro/hono pipeline installs security.checkOrigin only through the middleware primitive, while actions and pages can dispatch to user code independently. Mounting actions before middleware, as in the...

CVE-2026-73423

Astro (web framework) vulnerability CVE-2026-73423 affects the composable astro/hono pipeline from versions 7.0.0–7.0.6. If actions() or pages() are mounted before middleware(), or if middleware() is omitted, security.checkOrigin is not enforced at dispatch sinks, allowing blind write‑only CSRF a...