CVE-2026-74934
7.5
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitability: 1.6 / Impact: 5.9
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
Description
Site isolation issue in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.
Affected (5)
Products: Mozilla: Firefox, Thunderbird
Configuration A
| Vulnerable Software | Affected Versions |
|---|---|
| Before 115.39.0 | |
| Before 140.14.0 |
Related CWEs
CWE-200
Exposure of Sensitive Information to an Unauthorized Actor
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CWE-284
Improper Access Control
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CWE-346
Origin Validation Error
The product does not properly verify that the source of data or communication is valid.
References (8)
Source: security@mozilla.org
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Timeline
No history available yet.