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CVE-2018-20356

Status: ModifiedCritical (9.8)—

An invalid read of 8 bytes due to a use-after-free vulnerability in the mg_http_free_proto_data_cgi function call in mongoose.c in Cesanta Mongoose Embedded Web Server Library 6.13 and earlier allows a denial of service (application crash) or remote code execution.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Cesanta — Mongoose

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2018-20356",
  "cveTags": [],
  "metrics": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
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  "published": "2019-06-10T17:29:02.173",
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    },
    {
      "lang": "es",
      "value": "Una lectura no válida de 8 bytes debido a una vulnerabilidad de uso después de la llamada a la función mg_http_free_proto_data_cgi en mongoose.c en Cesanta Mongoose Embedded Web Server Library 6.13 y anteriores permite una denegación de servicio (bloqueo de la aplicación) o ejecución remota de código."
    }
  ],
  "lastModified": "2026-06-17T01:52:41.163",
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