CVE-2026-4728 | Mozilla Firefox up to 148 Anti-Tracking

VDB-352778 · CVE-2026-4728 · GCVE-0-2026-4728 MOZILLA FIREFOX UP TO 148 ANTI-TRACKING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.1 $5k-$25k 2.33+ Summaryinfo A vulnerability was found in Mozilla Firefox up to 148. It has been declared as problematic. This affects an unknown function of the component Anti-Tracking. Such manipulation leads to an unknown weakness. This vulnerability is listed as CVE-2026-4728. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component. Detailsinfo A vulnerability was found in Mozilla Firefox up to 148 and classified as problematic. Affected by this issue is some unknown processing of the component Anti-Tracking. Impacted is integrity. CVE summarizes: Spoofing issue in the Privacy: Anti-Tracking component. This vulnerability affects Firefox < 149. The advisory is available at bugzilla.mozilla.org. This vulnerability is handled as CVE-2026-4728 since 03/24/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 03/24/2026). Upgrading to version 149 eliminates this vulnerability. Productinfo Type Web Browser Vendor Mozilla Name Firefox Version 148 License open-source Website Vendor: https://www.mozilla.org/ Product: https://www.mozilla.org/en-US/firefox/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.3 VulDB Meta Temp Score: 4.1 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Unknown CWE: Unknown CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Firefox 149 Timelineinfo 03/24/2026 Advisory disclosed 03/24/2026 +0 days CVE reserved 03/24/2026 +0 days VulDB entry created 03/24/2026 +0 days VulDB entry last update Sourcesinfo Vendor: mozilla.org Product: mozilla.org Advisory: bugzilla.mozilla.org Status: Confirmed CVE: CVE-2026-4728 (🔒) GCVE (CVE): GCVE-0-2026-4728 GCVE (VulDB): GCVE-100-352778 Entryinfo Created: 03/24/2026 14:47 Changes: 03/24/2026 14:47 (54) Complete: 🔍 Cache ID: 99:150:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸