CVE-2026-4728 Details
Description
Spoofing issue in the Privacy: Anti-Tracking component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
A spoofing vulnerability has been identified in the Privacy: Anti-Tracking component of Mozilla Firefox. This issue affects Firefox versions prior to 149. The vulnerability allows for spoofing, which could potentially be exploited to mislead or deceive users or systems.
Users can upgrade to Firefox 149 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 Mar 25, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=2013179 | [email protected] | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2026-20/ | [email protected] | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2026-23/ | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-290 | Authentication Bypass by Spoofing | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| mozilla firefox | < 149.0 |
CPE
Remediation
| |
| mozilla thunderbird | < 149.0 |
CPE
Remediation
| |
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Apr 13, 2026 | CVE Modified | [email protected] |
| Mar 25, 2026 | Initial Analysis | [email protected] |
| Mar 25, 2026 | CVE Modified | CISA-ADP |
| Mar 24, 2026 | CVE Modified | [email protected] |
| Mar 24, 2026 | New CVE Received | [email protected] |