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CVE-2021-4140

Estado: ModificadaCrítica (10)—

It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.

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 (3)

Mozilla — FirefoxMozilla — Firefox ESRMozilla — Thunderbird

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-4140",
  "cveTags": [],
  "metrics": {
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          "options": [
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          "version": "2.0.3",
          "timestamp": "2025-04-16T15:55:14.536299Z"
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  "published": "2022-12-22T20:15:12.250",
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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      "value": "It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5."
    },
    {
      "lang": "es",
      "value": "Fue posible construir un marcado XSLT específico que podría omitir un entorno limitado de iframe. Esta vulnerabilidad afecta a Firefox ESR &lt; 91.5, Firefox &lt; 96 y Thunderbird &lt; 91.5."
    }
  ],
  "lastModified": "2026-06-17T04:19:06.313",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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