CVE-2015-7215: Fedoraproject Fedora

Medium severity, CVSS 5.0. EPSS: 2.5% chance of exploitation in the next 30 days.

The importScripts function in the Web Workers API implementation in Mozilla Firefox before 43.0 allows remote attackers to bypass the Same Origin Policy by triggering use of the no-cors mode in the fetch API to attempt resource access that throws an exception, leading to information disclosure after a rethrow.

Affected products

• Fedoraproject Fedora: version 22 only; version 23 only
• Mozilla Firefox: up to and including 42.0
• Opensuse Leap: version 42.1 only
• Opensuse Opensuse: version 13.1 only; version 13.2 only

Published 2015-12-16. Last modified 2026-06-17.