CVE-2018-16476: Red Hat Cloudforms

High severity, CVSS 7.5. EPSS: 2.9% chance of exploitation in the next 30 days.

A Broken Access Control vulnerability in Active Job versions >= 4.2.0 allows an attacker to craft user input which can cause Active Job to deserialize it using GlobalId and give them access to information that they should not have. This vulnerability has been fixed in versions 4.2.11, 5.0.7.1, 5.1.6.1, and 5.2.1.1.

Affected products

• Red Hat Cloudforms: version 4.6 only
• Rubyonrails Rails: from 4.2.0, before 4.2.11 (fixed in 4.2.11); from 5.0.0, before 5.0.7.1 (fixed in 5.0.7.1); from 5.1.0, before 5.1.6.1 (fixed in 5.1.6.1); from 5.2.0, before 5.2.1.1 (fixed in 5.2.1.1)

Published 2018-11-30. Last modified 2026-06-17.