An attacker who enumerated resources from the WebCompat extension could have obtained a persistent UUID that identified the browser, and persisted between containers and normal/private browsing mode, but not profiles. This vulnerability affects Firefox < 140, Firefox ESR < 115.25, Firefox ESR < 128.12, Thunderbird < 140, and Thunderbird < 128.12.
{
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"binary_name": "thunderbird-dev"
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"binary_name": "thunderbird-gnome-support"
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"binary_name": "thunderbird-mozsymbols"
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],
"availability": "No subscription required"
}