CVE-2026-33768

POST /api/health?x_astro_path=/admin/delete-user HTTP/1.1 Host: target-astro-app.vercel.app Content-Type: application/json {"user_id": "12345"}

{"cve": {"id": "CVE-2026-33768", "sourceIdentifier": "[email protected]", "published": "2026-03-24T19:16:55.653", "lastModified": "2026-03-26T13:37:30.467", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Astro es un web framework. Antes de la versión 10.0.2, el punto de entrada sin servidor @astrojs/vercel lee la cabecera x-astro-path y el parámetro de consulta x_astro_path para reescribir la ruta de solicitud interna, sin autenticación alguna. En despliegues sin Edge Middleware, esto permite a cualquiera eludir por completo las restricciones de ruta a nivel de plataforma de Vercel. La anulación preserva el método HTTP y el cuerpo originales, por lo que esto no se limita a GET. POST, PUT, DELETE todos aterrizan en la ruta reescrita. Una regla de cortafuegos que bloquea /admin/* no hace nada cuando la solicitud llega como POST /api/health?x_astro_path=/admin/delete-user. Este problema ha sido parcheado en la versión 10.0.2."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 2.5}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "baseScore": 9.1, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-441"}, {"lang": "en", "value": "CWE-862"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:astro:\\@astrojs\\/vercel:*:*:*:*:*:*:*:*", "versionEndExcluding": "10.0.2", "matchCriteriaId": "E77DAFA1-7306-47B7-9524-EBF8F8EE4CDA"}]}]}], "references": [{"url": "https://github.com/withastro/astro/commit/335a204161f5a7293c128db570901d4f8639c6ed", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/withastro/astro/pull/15959", "source": "[email protected]", "tags": ["Issue Tracking"]}, {"url": "https://github.com/withastro/astro/releases/tag/%40astrojs%2Fvercel%4010.0.2", "source": "[email protected]", "tags": ["Release Notes"]}, {"url": "https://github.com/withastro/astro/security/advisories/GHSA-mr6q-rp88-fx84", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}]}}