CVE-2026-12316

CRITICAL

Mitigation bypass in the DOM: Security component

Title source: cna
STIX 2.1

Description

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

References (3)

Core 3

Scores

CVSS v3 9.1
EPSS 0.0024
EPSS Percentile 15.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-693
Status published
Products (4)
mozilla/firefox < 152.0.0
Mozilla/Firefox 152
mozilla/thunderbird < 152.0.0
Mozilla/Thunderbird 152
Published Jun 16, 2026
Tracked Since Jun 16, 2026