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CVE-2026-82261

Estado: AnalizadaAlta (8.7)—

SvelteKit (@sveltejs/kit) versions >=2.49.0 and <=2.52.1 with experimental remote functions and form enabled contain a CPU exhaustion vulnerability in form deserialization. An attacker can send malformed form data to cause the server to become unresponsive while processing the request, resulting in denial of service. Fixed in 2.52.2.

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.

CVE con vector CVSS AV:N (red sin autenticación). Ataque contra aplicación web expuesta (SvelteKit) mediante envío de datos malformados. CWE-400 y descripción indican agotamiento de CPU, mapeado a T1499.004 (resource exhaustion).

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

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Svelte — Sveltekit

CWE

Referencias

JSON original (NVD)

Mostrar
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          "options": [
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          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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  "published": "2026-08-28T12:16:39.250",
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      "tags": [
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      ],
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    },
    {
      "url": "https://www.vulncheck.com/advisories/sveltekit-before-2.52.2-cpu-exhaustion-via-remote-form-deserialization",
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    }
  ],
  "lastModified": "2026-08-31T17:09:51.387",
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