medium
5.4
CWE
79
Advisory Published
CVE Published
Updated

CVE-2025-1015: XSS

First published: Tue Feb 04 2025(Updated: )

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.

Credit: security@mozilla.org

Affected SoftwareAffected VersionHow to fix
Thunderbird<128.7
128.7
Thunderbird>=128.0.1<128.7.0
Thunderbird<135
135

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2025-1015?

    The severity of CVE-2025-1015 is considered high due to the potential for a malicious payload being executed when an address book is imported.

  • How do I fix CVE-2025-1015?

    To fix CVE-2025-1015, upgrade to Thunderbird version 128.8 or later, which addresses the vulnerability.

  • What type of attacks can exploit CVE-2025-1015?

    CVE-2025-1015 can be exploited through crafted address books that contain unsanitized links leading to potential phishing or malware attacks.

  • Who is affected by CVE-2025-1015?

    Users of Mozilla Thunderbird versions up to 128.7 are affected by CVE-2025-1015 and should take immediate action to upgrade.

  • What should I do if I have already imported an affected address book related to CVE-2025-1015?

    If you have imported an affected address book related to CVE-2025-1015, it is recommended to delete the imported contacts and scan your system for potential malware.

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