CVE-2018-16470: Rack Project Rack

High severity, CVSS 7.5. EPSS: 2% chance of exploitation in the next 30 days.

There is a possible DoS vulnerability in the multipart parser in Rack before 2.0.6. Specially crafted requests can cause the multipart parser to enter a pathological state, causing the parser to use CPU resources disproportionate to the request size.

Affected products

• Rack Project Rack: version 2.0.4 only; version 2.0.5 only

Published 2018-11-13. Last modified 2026-06-17.