vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-43536): Firefox vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:P/I:N/A:N) | Dec 8, 2021 | Dec 10, 2021 | Mar 27, 2026 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
Dec 8, 2021
Added
Dec 10, 2021
Modified
Mar 27, 2026
Description
Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose the target URL. This vulnerability affects Thunderbird < 91.4.0, Firefox ESR < 91.4.0, and Firefox < 95.
Solutions
ubuntu-upgrade-firefoxubuntu-upgrade-thunderbird
References
Rapid7 Labs
2026 Global Threat Landscape Report
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