This vulnerability involves a bypass of mitigation controls within Firefox's Privacy: Anti-Tracking feature, potentially allowing an attacker to circumvent privacy protections. It was reported by Masato Kinugawa and fixed in Firefox 147.0.2. The CVSS vector indicates network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, no confidentiality impact, high integrity impact, and no availability impact. The vendor advisory explicitly states the issue is fixed in Firefox 147.0.2.

The vulnerability allows bypassing anti-tracking mitigations, which could lead to integrity impacts within the browser's privacy protections. There is no confidentiality or availability impact reported. The CVSS score of 6.5 reflects a moderate risk. No known exploits are currently active in the wild.

Users and administrators should update Mozilla Firefox to version 147.0.2 or later to remediate this vulnerability. The vendor advisory confirms that the issue is fixed in this release, so applying this official update fully mitigates the risk. No additional mitigation steps are indicated.