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CVE-2026-16371

nvd nist
Published: Jul 21, 2026Modified: Sep 1, 2026

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8.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitability: 2.8 / Impact: 5.9
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, Thunderbird 140.13, Firefox ESR 140.15, and Thunderbird 140.15.

Affected (4)

Mozilla
2 products
Firefox
Thunderbird
Configuration A
4 vulnerable
Vulnerable SoftwareAffected Versions
Mozilla
Firefox
Before 153.0.0
Firefox
Before 140.13.0
Mozilla
Thunderbird
Before 140.13.0
Thunderbird
From 141.0 to 153.0

Related CWEs

CWE-269
Improper Privilege Management
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

References (7)

Source: security@mozilla.org
Permissions Required
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Vendor Advisory
Source: security@mozilla.org
Source: security@mozilla.org

Timeline

No history available yet.