Description
When reusing existing popups Firefox would have allowed them to cover the fullscreen notification UI, which could have enabled browser spoofing attacks. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.
References (4)
Scores
CVSS v3
6.5
EPSS
0.0024
EPSS Percentile
47.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-1021
Status
published
Products (3)
mozilla/firefox
< 100.0
mozilla/firefox_esr
< 91.9
mozilla/thunderbird
< 91.9
Published
Dec 22, 2022
Tracked Since
Feb 18, 2026