CVE-2026-12324

Incorrect boundary conditions in the Graphics: CanvasWebGL component

High · published June 16, 2026

CVSS v3.1
7.3
EPSS
0%
Percentile
10.5
In the wild
Unconfirmed
What it is

Incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00209 · 10.5th percentile
Published
2026-06-16T11:52Z
EPSS history
Timeline
  • 16 JUN 11:52Z
    Incorrect boundary conditions in the Graphics: CanvasWebGL component
    cvelistv5