Bug 2526775 (CVE-2026-84125)

Summary: CVE-2026-84125 firefox: Firefox: Arbitrary code execution via use-after-free in DOM: Core & HTML
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
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. A use-after-free vulnerability in the DOM: Core & HTML component could allow a remote attacker to execute arbitrary code.
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Description OSIDB Bzimport 2026-09-01 12:49:27 UTC
Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 155 and Firefox ESR 153.2.