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CVE-2026-12296 Sandbox escape in the Security: Process Sandboxing component

🗓️ 16 Jun 2026 11:52:29Reported by mozillaType 
cvelist
 cvelist
🔗 www.cve.org👁 3 Views

Sandbox escape in Security: Process Sandboxing, fixed in Firefox 152 and Firefox ESR 140.12.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
CVE
CVE-2026-12296
16 Jun 202611:52
cve
EUVD
EUVD-2026-37087
16 Jun 202611:52
euvd
NVD
CVE-2026-12296
16 Jun 202613:16
nvd
Positive Technologies
PT-2026-49665
16 Jun 202600:00
ptsecurity
[
  {
    "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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