CVE-2020-28279: Flattenizer Project Flattenizer

Critical severity, CVSS 9.8. EPSS: 3.1% chance of exploitation in the next 30 days.

Prototype pollution vulnerability in 'flattenizer' versions 0.0.5 through 1.0.5 allows an attacker to cause a denial of service and may lead to remote code execution.

Affected products

• Flattenizer Project Flattenizer: from 0.0.5, up to and including 1.0.5

Published 2020-12-29. Last modified 2026-06-17.