Bug 2526754 (CVE-2026-84139)

Summary: CVE-2026-84139 firefox: thunderbird: Clickjacking issue in the DOM: Events component
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: gotiwari, jhorak, mvyas, rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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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: Clickjacking issue in the DOM: Events component
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Description OSIDB Bzimport 2026-09-01 12:42:10 UTC
Clickjacking issue in the DOM: Events component. This vulnerability was fixed in Firefox 155 and Firefox ESR 153.2.