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CVE-2026-12311

CVSS 4.7v3.1pub. 2026-06-16

Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

  • Mozilla Firefox

    APP
    Mozilla
    < 152.0140.0 – 140.12.0 (bez)

  • Mozilla Thunderbird

    APP
    Mozilla
    < 152.0.0140.0 – 140.12.0 (bez)
🔵
CHECK WITH VENDOR
No clear patch data available. Check vendor references.
CWE
References

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