CVE-2021-20087: Acemetrix jQuery-Deparam

High severity, CVSS 8.8. EPSS: 2.1% chance of exploitation in the next 30 days.

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-deparam 0.5.1 allows a malicious user to inject properties into Object.prototype.

Affected products

• Acemetrix jQuery-Deparam: version 0.5.1 only

Published 2021-04-23. Last modified 2026-06-17.