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CVE-2022-24999

Estado: ModificadaAlta (7.5)—💥 PoC

qs before 6.10.3, as used in Express before 4.17.3 and other products, allows attackers to cause a Node process hang for an Express application because an __ proto__ key can be used. In many typical Express use cases, an unauthenticated remote attacker can place the attack payload in the query string of the URL that is used to visit the application, such as a[__proto__]=b&a[__proto__]&a[length]=100000000. The fix was backported to qs 6.9.7, 6.8.3, 6.7.3, 6.6.1, 6.5.3, 6.4.1, 6.3.3, and 6.2.4 (and therefore Express 4.17.3, which has "deps: qs@6.9.7" in its release description, is not vulnerable).

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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

Tecnologías afectadas (3)

Debian — Debian LinuxOpenjsf — ExpressQS Project — QS

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2022-24999",
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              "automatable": "yes"
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2025-04-29T13:56:22.823843Z"
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          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
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      "value": "qs before 6.10.3, as used in Express before 4.17.3 and other products, allows attackers to cause a Node process hang for an Express application because an __ proto__ key can be used. In many typical Express use cases, an unauthenticated remote attacker can place the attack payload in the query string of the URL that is used to visit the application, such as a[__proto__]=b&a[__proto__]&a[length]=100000000. The fix was backported to qs 6.9.7, 6.8.3, 6.7.3, 6.6.1, 6.5.3, 6.4.1, 6.3.3, and 6.2.4 (and therefore Express 4.17.3, which has \"deps: qs@6.9.7\" in its release description, is not vulnerable)."
    },
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      "value": "qs anterior a 6.10.3, como se usa en Express anterior a 4.17.3 y otros productos, permite a los atacantes provocar que un proceso de Nodo se cuelgue para una aplicación Express porque se puede usar una clave __ proto__. En muchos casos de uso típicos de Express, un atacante remoto no autenticado puede colocar el payload del ataque en la cadena de consulta de la URL que se utiliza para visitar la aplicación, como a[__proto__]=b&a[__proto__]&a[length] =100000000. La solución se respaldó a qs 6.9.7, 6.8.3, 6.7.3, 6.6.1, 6.5.3, 6.4.1, 6.3.3 y 6.2.4 (y por lo tanto a Express 4.17.3, que tiene \"deps : qs@6.9.7\" en la descripción de su versión, no es vulnerable)."
    }
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  "lastModified": "2026-06-17T04:32:55.200",
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