A race condition could lead to a cross-origin container obtaining permissions of the top-level origin. This vulnerability affects Firefox < 128, Firefox ESR < 115.13, Thunderbird < 115.13, and Thunderbird < 128.
bugzilla.mozilla.org/show_bug.cgi?id=1890748
ubuntu.com/security/CVE-2024-6601
ubuntu.com/security/notices/USN-6890-1
ubuntu.com/security/notices/USN-6903-1
www.cve.org/CVERecord?id=CVE-2024-6601
www.mozilla.org/en-US/security/advisories/mfsa2024-29/#CVE-2024-6601
www.mozilla.org/en-US/security/advisories/mfsa2024-30/#CVE-2024-6601
www.mozilla.org/security/advisories/mfsa2024-29/
www.mozilla.org/security/advisories/mfsa2024-30/