MFSA2020-50 Firefox: Security Vulnerabilities fixed in Firefox 83 (CVE-2020-26956)
4
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
11/17/2020
11/19/2020
11/18/2020
12/14/2020
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)
- mozilla-firefox-upgrade-83_0
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