It was possible to construct specific XSLT markup that would be able to bypass an iframe sandbox. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2022-12-22T00:00:00

Updated: 2024-08-03T17:16:04.229Z

Reserved: 2021-12-20T00:00:00

Link: CVE-2021-4140

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2022-12-22T20:15:12.250

Modified: 2023-01-03T20:03:32.527

Link: CVE-2021-4140

cve-icon Redhat

Severity : Important

Publid Date: 2022-01-11T00:00:00Z

Links: CVE-2021-4140 - Bugzilla