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CVE-2021-23953

CVE-2021-23953

EPSS 1.1%
If a user clicked into a specifically crafted PDF, the PDF reader could be confused into leaking cross-origin information, when said information is served as chunked data. This vulnerability affects Firefox < 85, Thunderbird < 78.7, and Firefox ESR < 78.7.
Produtos afetados
Mozilla · FirefoxMozilla · Firefox ESRMozilla · Thunderbird

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Referências
https://bugzilla.mozilla.org/show_bug.cgi?id=1683940https://www.mozilla.org/security/advisories/mfsa2021-03/https://www.mozilla.org/security/advisories/mfsa2021-04/https://www.mozilla.org/security/advisories/mfsa2021-05/