Description
Sandbox escape in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.
References (5)
Scores
CVSS v3
10.0
EPSS
0.0010
EPSS Percentile
26.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-284
CWE-693
Status
published
Products (8)
mozilla/firefox
< 140.8.0
mozilla/firefox
< 148.0
Mozilla/Firefox
140.8 - 140.*
Mozilla/Firefox
148
mozilla/thunderbird
< 140.8.0
mozilla/thunderbird
< 148.0
Mozilla/Thunderbird
140.8 - 140.*
Mozilla/Thunderbird
148
Published
Feb 24, 2026
Tracked Since
Feb 24, 2026