CVE-2022-44572: Rack

High severity, CVSS 7.5. EPSS: 1.6% chance of exploitation in the next 30 days.

A denial of service vulnerability in the multipart parsing component of Rack fixed in 2.0.9.2, 2.1.4.2, 2.2.4.1 and 3.0.0.1 could allow an attacker tocraft input that can cause RFC2183 multipart boundary parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. Any applications that parse multipart posts using Rack (virtually all Rails applications) are impacted.

Affected products

• Rack Rack: before 2.0.9.2 (fixed in 2.0.9.2); from 2.1.0, before 2.1.4.2 (fixed in 2.1.4.2); from 2.2.0, before 2.2.4.1 (fixed in 2.2.4.1)

Published 2023-02-09. Last modified 2026-06-17.