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firefox: thunderbird: Mitigation bypass in the DOM: Security component

🗓️ 20 May 2026 02:05:23Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 14 Views

Firefox and Thunderbird mitigation bypass in the document object model security component per Mozilla advisory.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.2aarch64thunderbird0:140.10.0-1.el9_2thunderbird-0:140.10.0-1.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2ppc64lethunderbird0:140.10.0-1.el9_2thunderbird-0:140.10.0-1.el9_2.ppc64le.rpm
Red Hat Enterprise Linux9.2s390xthunderbird0:140.10.0-1.el9_2thunderbird-0:140.10.0-1.el9_2.s390x.rpm
Red Hat Enterprise Linux9.2x86_64thunderbird0:140.10.0-1.el9_2thunderbird-0:140.10.0-1.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2aarch64thunderbird-debuginfo0:140.10.0-1.el9_2thunderbird-debuginfo-0:140.10.0-1.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2ppc64lethunderbird-debuginfo0:140.10.0-1.el9_2thunderbird-debuginfo-0:140.10.0-1.el9_2.ppc64le.rpm
Red Hat Enterprise Linux9.2s390xthunderbird-debuginfo0:140.10.0-1.el9_2thunderbird-debuginfo-0:140.10.0-1.el9_2.s390x.rpm
Red Hat Enterprise Linux9.2x86_64thunderbird-debuginfo0:140.10.0-1.el9_2thunderbird-debuginfo-0:140.10.0-1.el9_2.x86_64.rpm
Red Hat Enterprise Linux9.2aarch64thunderbird-debugsource0:140.10.0-1.el9_2thunderbird-debugsource-0:140.10.0-1.el9_2.aarch64.rpm
Red Hat Enterprise Linux9.2ppc64lethunderbird-debugsource0:140.10.0-1.el9_2thunderbird-debugsource-0:140.10.0-1.el9_2.ppc64le.rpm
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30 Jun 2026 13:36Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.19.8
EPSS0.00309
SSVC
14