Privilege Escalation in Firefox Navigation Component by Mozilla

CVE-2026-109756

What is CVE-2026-109756?

A vulnerability has been identified in the Navigation component of Mozilla's Firefox browsers, which allows for potential privilege escalation. This issue can be exploited to elevate user privileges, compromising user data and overall system security. The vulnerability was addressed in Firefox version 158 and Firefox Extended Support Release (ESR) version 153.5, ensuring enhanced protection for users. It is crucial for administrators and users to update their browsers to the latest versions to mitigate the risk associated with this vulnerability.

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