When a worker is shutdown, it was possible to cause script to run late in the lifecycle, at a point after where it should not…

Mozilla developers Paul Adenot and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 96 and Firefox ESR 91.5. Some of these bugs…

When clicking on a tel: link, USSD codes, specified after a <code>*</code> character, would be included in the phone number. On certain phones, or on…

If a document created a sandboxed iframe without <code>allow-scripts</code>, and subsequently appended an element to the iframe’s document that e.g. had a JavaScript event handler…

When importing resources using Web Workers, error messages would distinguish the difference between <code>application/javascript</code> responses and non-script responses. This could have been abused to learn…

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…

If a user was convinced to drag and drop an image to their desktop or other folder, the resulting object could have been changed into…

Remote Agent, used in WebDriver, did not validate the Host or Origin headers. This could have allowed websites to connect back locally to the user’s…

Mozilla developers Calixte Denizet, Kershaw Chang, Christian Holler, Jason Kratzer, Gabriele Svelto, Tyson Smith, Simon Giesecke, and Steve Fink reported memory safety bugs present in…

Mozilla developers Christian Holler and Jason Kratzer reported memory safety bugs present in Firefox 95. Some of these bugs showed evidence of memory corruption and…