CVE-2016-5251: Mozilla Firefox

Medium severity, CVSS 4.3. EPSS: 1.5% chance of exploitation in the next 30 days.

Mozilla Firefox before 48.0 allows remote attackers to spoof the location bar via crafted characters in the media type of a data: URL.

Affected products

• Mozilla Firefox: up to and including 47.0.1

Published 2016-08-05. Last modified 2026-06-17.