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By checking the result of calls to `window.open` with specifically set protocol handlers, an attacker could determine if the application which implements that protocol handler is installed. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.
Reserved 2024-10-01 | Published 2024-10-01 | Updated 2024-10-30 | Assigner mozillaExternal protocol handlers could be enumerated via popups
Satoki Tsuji
bugzilla.mozilla.org/show_bug.cgi?id=1881037
www.mozilla.org/security/advisories/mfsa2024-46/
www.mozilla.org/security/advisories/mfsa2024-47/
www.mozilla.org/security/advisories/mfsa2024-49/
www.mozilla.org/security/advisories/mfsa2024-50/
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