vulnerability
Alma Linux: CVE-2021-4140: Important: thunderbird security update (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 10 | (AV:N/AC:L/Au:N/C:C/I:C/A:C) | Jan 12, 2022 | May 4, 2022 | Mar 31, 2026 |
Severity
10
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
Jan 12, 2022
Added
May 4, 2022
Modified
Mar 31, 2026
Description
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.
Solutions
alma-upgrade-firefoxalma-upgrade-thunderbird
Rapid7 Labs
2026 Global Threat Landscape Report
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