MFSA2020-51 Firefox: Security Vulnerabilities fixed in Firefox ESR 78.5 (CVE-2020-26953)
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
It was possible to cause the browser to enter fullscreen mode without displaying the security UI; thus making it possible to attempt a phishing attack or otherwise confuse the user. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
Solution(s)
- mozilla-firefox-esr-upgrade-78_5
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