CVE-2016-1942: Mozilla Firefox

High severity, CVSS 7.4. EPSS: 1.8% chance of exploitation in the next 30 days.

Mozilla Firefox before 44.0 allows user-assisted remote attackers to spoof a trailing substring in the address bar by leveraging a user's paste of a (1) wyciwyg: URI or (2) resource: URI.

Affected products

• Mozilla Firefox: up to and including 43.0.4
• Opensuse Leap: version 42.1 only
• Opensuse Opensuse: version 13.1 only; version 13.2 only

Published 2016-01-31. Last modified 2026-06-17.