Bug 2489209 (CVE-2026-12311)

Summary: CVE-2026-12311 firefox: thunderbird: Information disclosure, sandbox escape in the Security: Process Sandboxing component
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: gotiwari, jhorak, mvyas, rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Information disclosure, sandbox escape in the Security: Process Sandboxing component
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-06-16 14:01:28 UTC
Information disclosure, sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152 and Firefox ESR 140.12.

Comment 1 errata-xmlrpc 2026-06-22 03:03:19 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:27717 https://access.redhat.com/errata/RHSA-2026:27717

Comment 2 errata-xmlrpc 2026-06-22 03:51:01 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:27733 https://access.redhat.com/errata/RHSA-2026:27733

Comment 3 errata-xmlrpc 2026-06-22 04:18:35 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:27734 https://access.redhat.com/errata/RHSA-2026:27734

Comment 4 errata-xmlrpc 2026-06-25 15:58:40 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:29940 https://access.redhat.com/errata/RHSA-2026:29940