CVE-2021-20089: Purl Project Purl

High severity, CVSS 8.8. EPSS: 1.6% chance of exploitation in the next 30 days.

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') in purl 2.3.2 allows a malicious user to inject properties into Object.prototype.

Affected products

• Purl Project Purl: version 2.3.2 only

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