Description
Sandbox escape in the DOM: Networking component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
Scores
CVSS v3
9.8
EPSS
0.0037
EPSS Percentile
30.3%
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-693
Status
published
Products (4)
mozilla/firefox
< 153.0.0
Mozilla/Firefox
153
mozilla/thunderbird
< 153.0
Mozilla/Thunderbird
153
Published
Jul 21, 2026
Tracked Since
Jul 21, 2026