Astro: Unauthenticated Path Override via `x-astro-path` / `x_astro_path`_CVE-2026-33768

6.5 / 10

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Description

Astro is a web framework. Prior to version 10.0.2, the @astrojs/vercel serverless entrypoint reads the x-astro-path header and x_astro_path query parameter to rewrite the internal request path, with no authentication whatsoever. On deployments without Edge Middleware, this lets anyone bypass Vercel's platform-level path restrictions entirely. The override preserves the original HTTP method and body, so this isn't limited to GET. POST, PUT, DELETE all land on the rewritten path. A Firewall rule blocking /admin/* does nothing when the request comes in as POST /api/health?x_astro_path=/admin/delete-user. This issue has been patched in version 10.0.2.

Basic Information

ID CVE-2026-33768

Source GitHub_M

Published Mar 24, 2026 at 18:40

Modified Mar 24, 2026 at 18:53

Affected Product

Vendor withastro

Product astro

Version < 10.0.2

Affected Versions withastro astro < 10.0.2

CWE Classification

CWE-441 CWE-862

References

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    "published": "2026-03-24T18:40:12.549Z",
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