CVE-2021-20084: jQuery-Sparkle Project jQuery-Sparkle

High severity, CVSS 8.8. EPSS: 1.4% chance of exploitation in the next 30 days.

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in jquery-sparkle 1.5.2-beta allows a malicious user to inject properties into Object.prototype.

Affected products

• jQuery-Sparkle Project jQuery-Sparkle: version 1.5.2 only

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