CVE-2021-23953

Description

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.

References

https://www.mozilla.org/security/advisories/mfsa2021-05/

https://www.mozilla.org/security/advisories/mfsa2021-04/

https://www.mozilla.org/security/advisories/mfsa2021-03/

https://bugzilla.mozilla.org/show_bug.cgi?id=1683940

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS