Description
Same-origin policy bypass in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 142, Firefox ESR 115.27, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.
References (10)
Scores
CVSS v3
8.1
EPSS
0.0003
EPSS Percentile
9.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-346
Status
published
Products (11)
mozilla/firefox
< 115.27.0
mozilla/firefox
< 142.0
Mozilla/Firefox
115.27 - 115.*
Mozilla/Firefox
128.14 - 128.*
Mozilla/Firefox
140.2 - 140.*
Mozilla/Firefox
142
mozilla/thunderbird
< 128.14.0
mozilla/thunderbird
< 142.0
Mozilla/Thunderbird
128.14 - 128.*
Mozilla/Thunderbird
140.2 - 140.*
... and 1 more
Published
Aug 19, 2025
Tracked Since
Feb 18, 2026