Executive Summary

This vulnerability is an improper permissions flaw in the Custom URL Scheme handler of ToDesktop Builder versions before 0.33.0. It allows attackers who have access to the renderer context—possibly through another vulnerability or malicious content—to invoke external protocol handlers without proper validation or permission checks. This means an attacker could trigger actions like opening arbitrary URLs in the user's browser or other external applications without authorization. [1]

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Impact Analysis

The vulnerability can impact you by allowing an attacker with low privileges and network access, combined with active user interaction, to perform unauthorized actions such as opening arbitrary URLs or launching external applications on your system. This could lead to further attacks, phishing, or exposure to malicious content, compromising confidentiality, integrity, and availability of your system. [1]

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Mitigation Strategies

To mitigate this vulnerability, immediately update ToDesktop Builder to version 0.33.0 or later. After updating, rebuild your applications and release new app versions. If you have automatic security updates disabled, enable them or apply the update manually to ensure protection against this issue. [1]

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