Description
The fullscreen notification is prematurely hidden when fullscreen is re-requested quickly by the user. This could have been leveraged to perform a potential spoofing attack. This vulnerability was fixed in Firefox 135 and Thunderbird 135.
Scores
CVSS v3
5.3
EPSS
0.0019
EPSS Percentile
39.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-1021
Status
published
Products (4)
mozilla/firefox
< 135.0
Mozilla/Firefox
135
mozilla/thunderbird
131.0 - 135.0
Mozilla/Thunderbird
135
Published
Feb 04, 2025
Tracked Since
Feb 18, 2026