CVE-2026-0881
10.0
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Exploitability: 3.9 / Impact: 6.0
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
Description
Sandbox escape in the Messaging System component. This vulnerability was fixed in Firefox 147 and Thunderbird 147.
Affected (2)
Products: Mozilla: Firefox, Thunderbird
Configuration A
| Vulnerable Software | Affected Versions |
|---|---|
| Before 147.0 | |
| Before 147.0 |
Related CWEs
CWE-284
Improper Access Control
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CWE-693
Protection Mechanism Failure
The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.
References (3)
Source: security@mozilla.org
Permissions Required
Timeline
No history available yet.