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CVE-2026-12315 Mitigation bypass in the DOM: Security component

🗓️ 16 Jun 2026 11:52:48Reported by mozillaType 
cvelist
 cvelist
🔗 www.cve.org👁 31 Views

Mitigation bypass in the DOM security component fixed in Firefox 152 and Firefox ESR 140.12.

Related
Affected
Refs
[
  {
    "product": "Firefox",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "140.12",
        "lessThanOrEqual": "140.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "152",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  },
  {
    "product": "Thunderbird",
    "vendor": "Mozilla",
    "versions": [
      {
        "status": "unaffected",
        "version": "140.12",
        "lessThanOrEqual": "140.*",
        "versionType": "rpm"
      },
      {
        "status": "unaffected",
        "version": "152",
        "lessThanOrEqual": "*",
        "versionType": "rpm"
      }
    ]
  }
]

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16 Jun 2026 16:08Current
EPSS0.00251
31