vulnerability
MFSA2021-54 Thunderbird: Security Vulnerabilities fixed in Thunderbird 91.4.0 (CVE-2021-43542)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:P/I:N/A:N) | Dec 7, 2021 | Dec 8, 2021 | Mar 27, 2026 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
Dec 7, 2021
Added
Dec 8, 2021
Modified
Mar 27, 2026
Description
Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages for loading external protocols. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
Solution
mozilla-thunderbird-upgrade-91_4
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