A security issue was found in Firefox before version 86.0 and Thunderbird before version 78.8. When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted, and the content of that error may have revealed information about the resource.
A security issue was found in Firefox before version 86.0 and Thunderbird before version 78.8. When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted, and the content of that error may have revealed information about the resource.
https://www.mozilla.org/en-US/security/advisories/mfsa2021-07/#CVE-2021-23973 https://www.mozilla.org/en-US/security/advisories/mfsa2021-09/#CVE-2021-23973 https://bugzilla.mozilla.org/show_bug.cgi?id=1690976