CVE-2025-1015 Information

Description

The Thunderbird Address Book URI fields contained unsanitized links. This could be used by an attacker to create and export an address book containing a malicious payload in a field. For example in the “Other” field of the Instant Messaging section. If another user imported the address book clicking on the link could result in opening a web page inside Thunderbird and that page could execute (unprivileged) JavaScript. This vulnerability affects Thunderbird < 128.7.

Reference

https://bugzilla.mozilla.org/show_bug.cgi?id=1939458 https://www.mozilla.org/security/advisories/mfsa2025-10/