5.4
Medium
CVE-2025-1015 The Thunderbird Address Book URI fields contained unsanitized links
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 was fixed in Thunderbird 128.7 and Thunderbird 135.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Thunderbird 135 | earliest → < 135 | 135 |
| Thunderbird 128.7 | earliest → < 128.7 | 128.7 |
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