EUVD-2026-14982
GHSA-mr6q-rp88-fx84
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Lifecycle Timeline
4Description
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.
Analysis
The @astrojs/vercel serverless adapter in Astro versions prior to 10.0.2 contains an unauthenticated path traversal vulnerability that allows attackers to bypass platform-level security restrictions by manipulating the x-astro-path header and x_astro_path query parameter. Any remote attacker without authentication can rewrite internal request paths to access restricted endpoints such as /admin/*, with the attack preserving the original HTTP method and request body, enabling POST, PUT, and DELETE operations against protected resources. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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External POC / Exploit Code
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