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CVE-2026-3989

Estado: AnalizadaAlta (7.8)—

SGLangs `replay_request_dump.py` contains an insecure pickle.load() without validation and proper deserialization. An attacker can take advantage of this by providing a malicious .pkl file, which will execute the attackers code on the device running the script.

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.

UI:R + AV:L (local) indica ejecución en cliente (fichero .pkl malicioso requiere apertura); pickle.load() permite RCE mediante código Python arbitrario.

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

Restrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or Program

Tecnologías afectadas (1)

Lmsys — Sglang

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-3989",
  "cveTags": [],
  "metrics": {
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          "role": "CISA Coordinator",
          "options": [
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          "version": "2.0.3",
          "timestamp": "2026-03-16T18:21:15.871965Z"
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  "published": "2026-03-12T12:15:59.630",
  "references": [
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    },
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      "lang": "es",
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    }
  ],
  "lastModified": "2026-08-10T14:32:40.693",
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          "operator": "OR"
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  "sourceIdentifier": "cret@cert.org"
}