CVE-2026-16366 Details
Description
Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 153 and Thunderbird 153.
A privilege escalation vulnerability has been identified in the DOM: Navigation component of Mozilla Firefox. This issue allows for unauthorized elevation of privileges, potentially leading to unauthorized actions or access within the application. The vulnerability affects Firefox versions prior to 153.
Users can upgrade to Firefox 153 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 24, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2049181 | [email protected] | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2026-68/ | [email protected] | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-71/ | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-269 | Improper Privilege Management | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| mozilla firefox | < 153.0.0 |
CPE
Remediation
| |
| mozilla thunderbird | < 153.0 |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Modified | CISA-ADP |
| Jul 24, 2026 | Initial Analysis | [email protected] |
| Jul 24, 2026 | CVE Modified | CISA-ADP |
| Jul 22, 2026 | CVE Modified | [email protected] |
| Jul 22, 2026 | CVE Modified | CISA-ADP |
| Jul 21, 2026 | New CVE Received | [email protected] |