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vulnerability

Debian: CVE-2021-43528: thunderbird -- security update

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
Dec 8, 2021
Added
Jan 4, 2022
Modified
Mar 30, 2026

Description

Thunderbird unexpectedly enabled JavaScript in the composition area. The JavaScript execution context was limited to this area and did not receive chrome-level privileges, but could be used as a stepping stone to further an attack with other vulnerabilities. This vulnerability affects Thunderbird < 91.4.0.

Solution

debian-upgrade-thunderbird
Title
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