Ubuntu: (Multiple Advisories) (CVE-2020-26956): Firefox vulnerabilities
4
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
11/18/2020
11/21/2020
11/19/2020
03/22/2023
Description
In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
Solution(s)
- ubuntu-upgrade-firefox
- ubuntu-upgrade-thunderbird
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