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CVE-2021-38509

Description

Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary (although unstyled) contents could be displayed over top an uncontrolled webpage of the attacker's choosing. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.


Affected Software


CPE Name Name Version
mozilla:firefox_esr mozilla firefox esr 91.3.0
mozilla:thunderbird mozilla thunderbird 91.3.0
mozilla:firefox mozilla firefox 94.0
debian:debian_linux debian debian linux 9.0
debian:debian_linux debian debian linux 10.0
debian:debian_linux debian debian linux 11.0

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