CVE-2018-3753: Merge-Object Project Merge-Object

Critical severity, CVSS 9.8. EPSS: 1.4% chance of exploitation in the next 30 days.

The utilities function in all versions <= 1.0.0 of the merge-objects node module can be tricked into modifying the prototype of Object when the attacker can control part of the structure passed to this function. This can let an attacker add or modify existing properties that will exist on all objects.

Affected products

• Merge-Object Project Merge-Object: up to and including 1.0.0

Published 2018-07-03. Last modified 2026-06-17.