Andreas Wagner

**Name of the Vulnerable Software and Affected Versions** Firefox versions prior to 68 **Description** The issue is related to a lack of protection for service data, which could allow a remote attacker to access confidential information. It is also associated with the installation of add-ons, where the initial fetch ignores the origin attributes of the browsing context, potentially leaking cookies in private browsing mode or across different containers for users of the Firefox Multi-Account Containers Web Extension. **Recommendations** For versions prior to 68, update to version 68 or later to resolve the issue. As a temporary workaround, consider disabling the installation of add-ons until a patch is available. Restrict access to sensitive data and avoid using private browsing mode or the Firefox Multi-Account Containers Web Extension in affected versions.