CVE-2025-1935 Information

Description

A web page could trick a user into setting that site as the default handler for a custom URL protocol. This vulnerability affects Firefox < 136 Firefox ESR < 128.8 Thunderbird < 136 and Thunderbird < 128.8.

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1866661 https://www.mozilla.org/security/advisories/mfsa2025-14/ https://www.mozilla.org/security/advisories/mfsa2025-16/ https://www.mozilla.org/security/advisories/mfsa2025-17/ https://www.mozilla.org/security/advisories/mfsa2025-18/