This update for MozillaFirefox fixes the following issues: Firefox Extended Support Release 91.7.0 ESR : - CVE-2022-26383: Browser window spoof using fullscreen mode - CVE-2022-26384: iframe allow-scripts sandbox bypass - CVE-2022-26387: Time-of-check time-of-use bug when verifying add-on signatures - CVE-2022-26381: Use-after-free in text reflows - CVE-2022-26386: Temporary files downloaded to /tmp and accessible by other local users