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CVE-2025-64765

CVE-2025-64765 · Astro middleware authentication checks based on url.pathname can be bypassed via url encoded values

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

Astro is a web framework. Prior to version 5.15.8, a mismatch exists between how Astro normalizes request paths for routing/rendering and how the application’s middleware reads the path for validation checks. Astro internally applies decodeURI() to determine which route to render, while the middleware uses context.url.pathname without applying the same normalization (decodeURI). This discrepancy may allow attackers to reach protected routes using encoded path variants that pass routing but bypass validation checks. This issue has been patched in version 5.15.8.

CVSS 6.9 · Medium · EPSS 0.5% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • astro

    Versions
    • < 5.15.8: Affected

    No fix published

  • astro npm

    Affected ranges
    • SEMVER: < 5.15.8

    Update to 5.15.8

Original sources

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