Security Vulnerabilities fixed in Thunderbird 102.5 — Mozilla

Service Workers should not be able to infer information about opaque cross-origin responses; but timing information for cross-origin media combined with Range requests might have allowed them to determine the presence or length of a media file. Through a series of popup and window.print calls, an...

January 14, 2020—KB4534271 (OS Build 14393.3443)

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