Mitigation Bypass in File Handling Feature of Firefox by Mozilla

CVE-2026-109782

What is CVE-2026-109782?

A mitigation bypass vulnerability has been identified in the File Handling component of Mozilla's Firefox ESR, potentially allowing attackers to exploit certain functions that were intended to be protected. This issue has been addressed in version 153.5 of Firefox ESR, ensuring enhanced security for users. For further insights and updates, refer to the official Mozilla advisories.

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