HarborGuard / CVE
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HIGHCVE-2026-8958Published Modified CNA mozilla

CVE-2026-8958: Information disclosure, sandbox escape in the Security: Process Sandboxing component

Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

Metrics

CVSS v3.1
8.6
Severity
HIGH
Fixed in
140.11
Affected Products
2

Fix available

140.11151
Affected packages
  • Mozilla / Firefox
    Fixed in 140.11, 151
  • Mozilla / Thunderbird
    Fixed in 140.11, 151
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
References