CVE-2025-3029

Summary

CVE-2025-3029 is a vulnerability that allows a maliciously crafted URL to hide its true origin through the use of specific Unicode characters. This issue can lead to potential spoofing attacks and affects older versions of Firefox (below 137 and ESR below 128.9) and Thunderbird (below 137 and below 128.9). Users who have not yet updated these browsers are at risk of falling victim to these attacks. The vulnerability arises from the way these browsers handle Unicode characters in URLs, making it crucial for users to keep their software up-to-date to protect against such threats.

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