CVE-2026-4728: Vulnerability in Mozilla Firefox
Spoofing issue in the Privacy: Anti-Tracking component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
AI Analysis
Technical Summary
CVE-2026-4728 is a spoofing vulnerability affecting the Privacy: Anti-Tracking component of Mozilla Firefox. Spoofing vulnerabilities typically allow an attacker to deceive users or systems by falsifying data or identities. This specific issue was resolved in Firefox 149. The CVSS vector indicates the vulnerability is remotely exploitable over the network without privileges but requires user interaction. The impact is limited to integrity (high) with no confidentiality or availability impact. Mozilla's advisory confirms the fix is included in Firefox 149.
Potential Impact
The vulnerability allows an attacker to spoof aspects of the Privacy: Anti-Tracking component, potentially misleading users or bypassing anti-tracking protections. The impact is rated medium with a CVSS score of 6.5, primarily affecting integrity. There is no evidence of confidentiality or availability impact. No known active exploitation has been reported.
Mitigation Recommendations
Mozilla has released an official fix for this vulnerability in Firefox 149. Users and administrators should update to Firefox 149 or later to remediate this issue. Since the vulnerability is fixed in this release, no additional mitigation steps are required.
CVE-2026-4728: Vulnerability in Mozilla Firefox
Description
Spoofing issue in the Privacy: Anti-Tracking component. This vulnerability was fixed in Firefox 149 and Thunderbird 149.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-4728 is a spoofing vulnerability affecting the Privacy: Anti-Tracking component of Mozilla Firefox. Spoofing vulnerabilities typically allow an attacker to deceive users or systems by falsifying data or identities. This specific issue was resolved in Firefox 149. The CVSS vector indicates the vulnerability is remotely exploitable over the network without privileges but requires user interaction. The impact is limited to integrity (high) with no confidentiality or availability impact. Mozilla's advisory confirms the fix is included in Firefox 149.
Potential Impact
The vulnerability allows an attacker to spoof aspects of the Privacy: Anti-Tracking component, potentially misleading users or bypassing anti-tracking protections. The impact is rated medium with a CVSS score of 6.5, primarily affecting integrity. There is no evidence of confidentiality or availability impact. No known active exploitation has been reported.
Mitigation Recommendations
Mozilla has released an official fix for this vulnerability in Firefox 149. Users and administrators should update to Firefox 149 or later to remediate this issue. Since the vulnerability is fixed in this release, no additional mitigation steps are required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mozilla
- Date Reserved
- 2026-03-23T23:22:54.953Z
- Cvss Version
- null
- State
- PUBLISHED
Threat ID: 69c2878af4197a8e3b320771
Added to database: 03/24/2026, 12:46:02 UTC
Last enriched: 04/14/2026, 12:14:34 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 197
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