MozillaCVELIST:CVE-2021-4140

HistoryDec 22, 2022 - 12:00 a.m.

CVE-2021-4140

2022-12-2200:00:00

mozilla

www.cve.org

vulnerability

xslt

markup

bypass

iframe

sandbox

firefox

thunderbird

AI Score

9.1

Confidence

High

EPSS

0.003

Percentile

65.6%

JSON

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.

CNA Affected

[
  {
    "vendor": "Mozilla",
    "product": "Firefox ESR",
    "versions": [
      {
        "version": "unspecified",
        "lessThan": "91.5",
        "status": "affected",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Mozilla",
    "product": "Firefox",
    "versions": [
      {
        "version": "unspecified",
        "lessThan": "96",
        "status": "affected",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Mozilla",
    "product": "Thunderbird",
    "versions": [
      {
        "version": "unspecified",
        "lessThan": "91.5",
        "status": "affected",
        "versionType": "custom"
      }
    ]
  }
]

References

bugzilla.mozilla.org/show_bug.cgi?id=1746720

CVE-2021-4140

CNA Affected

References

Related