CVE-2026-8969

8.1 HIGH

Published: May 19, 2026 Modified: May 20, 2026

Description

Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

0.0 Low Medium High Critical 10.0

Vector String

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

Patch Vendor Advisory Exploit Third Party Advisory

Source: security@mozilla.org

Permissions Required

Source: security@mozilla.org

Vendor Advisory

Source: security@mozilla.org

Vendor Advisory

3 reference(s) from NVD

CVSS v3 Score

8.1 / 10.0

EPSS (Exploit Probability)

0.3%

20th percentile

Exploitation Status

Not in CISA KEV

CWE-693

mozilla