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CVE-2026-25150

Estado: AnalizadaCrítica (10)—

Qwik is a performance focused javascript framework. Prior to version 1.19.0, a prototype pollution vulnerability exists in the formToObj() function within @builder.io/qwik-city middleware. The function processes form field names with dot notation (e.g., user.name) to create nested objects, but fails to sanitize dangerous property names like __proto__, constructor, and prototype. This allows unauthenticated attackers to pollute Object.prototype by sending crafted HTTP POST requests, potentially leading to privilege escalation, authentication bypass, or denial of service. This issue has been patched in version 1.19.0.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad remota sin autenticación (AV:N, PR:N) en middleware expuesto. Prototype pollution permite manipular objetos JavaScript globales para bypass de autenticación, escalada de privilegios y DoS.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementFilter Network TrafficApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareVulnerability Scanning

Tecnologías afectadas (1)

Qwik — Qwik

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-25150",
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  "metrics": {
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          "options": [
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              "exploitation": "none"
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              "automatable": "yes"
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-02-04T16:31:38.732304Z"
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      "url": "https://github.com/QwikDev/qwik/commit/5f65bae2bc33e6ca0c21e4cfcf9eae05077716f7",
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      "value": "Qwik is a performance focused javascript framework. Prior to version 1.19.0, a prototype pollution vulnerability exists in the formToObj() function within @builder.io/qwik-city middleware. The function processes form field names with dot notation (e.g., user.name) to create nested objects, but fails to sanitize dangerous property names like __proto__, constructor, and prototype. This allows unauthenticated attackers to pollute Object.prototype by sending crafted HTTP POST requests, potentially leading to privilege escalation, authentication bypass, or denial of service. This issue has been patched in version 1.19.0."
    },
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      "value": "Qwik es un framework de javascript centrado en el rendimiento. Antes de la versión 1.19.0, existe una vulnerabilidad de contaminación de prototipos en la función formToObj() dentro del middleware @builder.io/qwik-city. La función procesa los nombres de los campos del formulario con notación de puntos (por ejemplo, user.name) para crear objetos anidados, pero no logra sanear nombres de propiedades peligrosos como __proto__, constructor y prototype. Esto permite a atacantes no autenticados contaminar Object.prototype enviando solicitudes HTTP POST manipuladas, lo que podría conducir a escalada de privilegios, omisión de autenticación o denegación de servicio. Este problema ha sido parcheado en la versión 1.19.0."
    }
  ],
  "lastModified": "2026-06-17T10:24:11.763",
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