CVE-2026-92039

Published: Sep 15, 2026Modified: Oct 5, 2026

6.3

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Exploitability: 2.8 / Impact: 3.4

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

Mitigation bypass in the DOM: Notifications component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.

Affected (4)

Products: Mozilla: Firefox, Thunderbird

Mozilla

2 products

Firefox

Thunderbird

Configuration A

4 vulnerable

Vulnerable Software	Affected Versions
Mozilla Firefox	version < 153.3.0
Mozilla Firefox	154.0.0 ≤ version < 156.0.0
Mozilla Thunderbird	version < 153.3.0
Mozilla Thunderbird	154.0 ≤ version < 156.0