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CVE-2026-84376

CVE-2026-84376 · Astro: Authorization bypass from missing path-segment boundary check when stripping the configured base

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 6.3 · Medium · EPSS 0.7% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • astro

    Versions
    • < 7.2.4: Affected

    No fix published

  • astro npm

    Affected ranges
    • SEMVER: < 7.2.4

    Update to 7.2.4

Original sources

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