Now moving to some advanced solutions, you can clear the Cookies and Site Data for YouTube in Firefox. Do note that you will have to sign in again with your Google account to check your Subscriptions tab on YouTube. To open a Private Browsing window, press Command + Shift + P (Mac) or Control + Shift + P (Windows), and then open YouTube to see if it works. The next basic solution is checking if YouTube playback is working in Incognito Mode on Firefox. If you have a dual band Wi-Fi router, switch to a 5GHz frequency band for faster internet speeds and stay close to the router. You can run a speed test on your computer and check if your internet connection is strong enough for a seamless video viewing experience on YouTube. Starting with some basic solutions, check the internet connectivity at your home or workplace. Do note that the solutions are applicable to Windows and Mac. In this post, we will provide some solutions if YouTube is not working in Firefox. Solution Upgrade to Mozilla Firefox version 111.0 or later.Just like all other web browsers, Firefox can sometimes cause issues with certain websites. (CVE-2023-28177) Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2023-28176) - Mozilla developers and community members Calixte Denizet, Gabriele Svelto, Andrew McCreight, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 110. (CVE-2023-28163) - Mozilla developers Timothy Nikkel, Andrew McCreight, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 110 and Firefox ESR 102.8. ![]() Other versions of Firefox are unaffected. This bug only affects Firefox on Windows. (CVE-2023-25752) - When downloading files through the Save As dialog on Windows with suggested filenames containing environment variable names, Windows would have resolved those in the context of the current user. This may have lead future code to be incorrect and vulnerable. (CVE-2023-28162) - When accessing throttled streams, the count of available bytes needed to be checked in the calling function to be within bounds. This could have lead to a potentially exploitable crash. (CVE-2023-28161) - While implementing on AudioWorklets, some code may have casted one type to another, invalid, dynamic type. This is potentially dangerous if the local files came from different sources, such as in a download directory. (CVE-2023-28164) - If temporary one-time permissions, such as the ability to use the Camera, were granted to a document loaded using a file: URL, that permission persisted in that tab for all other documents loaded from a file: URL. (CVE-2023-28160) - Dragging a URL from a cross-origin iframe that was removed during the drag could have lead to user confusion and website spoofing attacks. (CVE-2023-25751) - When following a redirect to a publicly accessible web extension file, the URL may have been translated to the actual local path, leaking potentially sensitive information. This could lead to a potentially exploitable crash. (CVE-2023-25750) - Sometimes, when invalidating JIT code while following an iterator, the newly generated code could be overwritten incorrectly. (CVE-2023-25749) - Under certain circumstances, a ServiceWorker's offline cache may have leaked to the file system when using private browsing mode. ![]() This bug only affects Firefox for Android. Firefox will now confirm with users that they want to launch an external application before doing so. (CVE-2023-25748) - Android applications with unpatched vulnerabilities can be launched from a browser using Intents, exposing users to these vulnerabilities. (CVE-2023-28159) - By displaying a prompt with a long description, the fullscreen notification could have been hidden, resulting in potential user confusion or spoofing attacks. The fullscreen notification could have been hidden on Firefox for Android by using download popups, resulting in potential user confusion or spoofing attacks. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2023-09 advisory. Description The version of Firefox installed on the remote macOS or Mac OS X host is prior to 111.0. Synopsis A web browser installed on the remote macOS or Mac OS X host is affected by multiple vulnerabilities.
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