By using XSL Transforms, a malicious webserver could have served a user an XSL document that would continue to execute JavaScript (within the bounds of the same-origin policy) even after the tab was closed. This vulnerability affects Firefox < 97.
{ "binaries": [ { "binary_name": "firefox", "binary_version": "97.0+build2-0ubuntu0.18.04.1" }, { "binary_name": "firefox-dev", "binary_version": "97.0+build2-0ubuntu0.18.04.1" }, { "binary_name": "firefox-geckodriver", "binary_version": "97.0+build2-0ubuntu0.18.04.1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "97.0+build2-0ubuntu0.18.04.1" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_name": "firefox", "binary_version": "97.0+build2-0ubuntu0.20.04.1" }, { "binary_name": "firefox-dev", "binary_version": "97.0+build2-0ubuntu0.20.04.1" }, { "binary_name": "firefox-geckodriver", "binary_version": "97.0+build2-0ubuntu0.20.04.1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "97.0+build2-0ubuntu0.20.04.1" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_name": "firefox", "binary_version": "97.0+build2-0ubuntu1" }, { "binary_name": "firefox-dev", "binary_version": "97.0+build2-0ubuntu1" }, { "binary_name": "firefox-geckodriver", "binary_version": "97.0+build2-0ubuntu1" }, { "binary_name": "firefox-mozsymbols", "binary_version": "97.0+build2-0ubuntu1" } ], "availability": "No subscription required" }