title: Red Hat Security Advisory: firefox security update
description: Mozilla: Iframe sandbox bypass with XSLT Mozilla: Race condition when playing audio files Mozilla: Heap-buffer-overflow in blendGaussianBlur Mozilla: Missing throttling on external protocol launch dialog Mozilla: Use-after-free of ChannelEventQueue::mOwner Mozilla: Browser window spoof using fullscreen mode Mozilla: Out-of-bounds memory access when inserting text in edit mode Mozilla: Browser window spoof using fullscreen mode Mozilla: Leaking cross-origin URLs through securitypolicyviolation event Mozilla: Crash when handling empty pkcs7 sequence Mozilla: Spoofed origin on external protocol launch dialog Mozilla: Memory safety bugs fixed in Firefox 96 and Firefox ESR 91.5
cpes: cpe:/a:redhat:rhel_eus:8.4::appstream