Description
Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
Scores
CVSS v3
9.8
EPSS
0.0006
EPSS Percentile
19.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-288
Status
published
Products (7)
mozilla/firefox
< 150.0
mozilla/firefox
140.0 - 140.10.0
Mozilla/Firefox
140.10 - 140.*
Mozilla/Firefox
150
mozilla/thunderbird
140.0 - 140.10.0
Mozilla/Thunderbird
140.10 - 140.*
Mozilla/Thunderbird
150
Published
Apr 21, 2026
Tracked Since
Apr 21, 2026