Description
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
References (6)
Scores
CVSS v3
8.0
EPSS
0.0006
EPSS Percentile
19.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-754
Status
published
Products (9)
mozilla/firefox
< 115.31.0
mozilla/firefox
< 146.0
Mozilla/Firefox
115.31 - 115.*
Mozilla/Firefox
140.6 - 140.*
Mozilla/Firefox
146
mozilla/thunderbird
< 140.6.0
mozilla/thunderbird
< 146.0
Mozilla/Thunderbird
140.6 - 140.*
Mozilla/Thunderbird
146
Published
Dec 09, 2025
Tracked Since
Feb 18, 2026