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CVE-2021-47857

Estado: AnalizadaMedia (5.1)—

Moodle 3.10.3 contains a persistent cross-site scripting vulnerability in the calendar event subtitle field that allows attackers to inject malicious scripts. Attackers can craft a calendar event with malicious JavaScript in the subtitle track label to execute arbitrary code when users view the event.

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).

Tecnologías afectadas (1)

Moodle — Moodle

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-47857",
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  "published": "2026-01-21T18:16:16.567",
  "references": [
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      "tags": [
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      "description": [
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          "value": "CWE-79"
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    },
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    }
  ],
  "lastModified": "2026-06-17T04:18:38.433",
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