CVE-2018-5136

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 59

Description The issue is related to a shared worker created from a "data:" URL in one tab being shared by another tab with a different origin, which bypasses the same-origin policy. This allows a remote attacker to potentially gain unauthorized access to protected information due to an insufficient input validation mechanism.

Recommendations For versions prior to 59, update to version 59 or later to resolve the issue.