Privilege Escalation in Firefox by Mozilla

CVE-2026-74953

What is CVE-2026-74953?

A vulnerability identified in the Networking: Cookies component of Mozilla Firefox allows attackers to perform privilege escalation. This issue could potentially enable malicious entities to gain unauthorized privileges within the application. The vulnerability has been addressed in versions Firefox 154, Firefox ESR 140.14, and Firefox ESR 153.1, ensuring enhanced security for users. It is essential for users to update their Firefox installations to the latest versions to mitigate risks and protect sensitive data.

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