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.

Classification

CVE ID: CVE-2025-1015

Affected Products

Vendor: Mozilla

Product: Thunderbird

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.05% (probability of being exploited)

EPSS Percentile: 19.83% (scored less or equal to compared to others)

EPSS Date: 2025-03-05 (when was this score calculated)

References

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

Timeline