CVE-2025-1935 – Firefox Custom URL Protocol Handler Vulnerability

The following table lists the changes that have been made to the
CVE-2025-1935 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Mar. 04, 2025

    Action Type Old Value New Value
    Added 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 and Firefox ESR < 128.8.
    Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=1866661
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-14/
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-16/
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