CVE-2018-1000119: Sinatrarb Rack-Protection

Medium severity, CVSS 5.9. EPSS: 2.4% chance of exploitation in the next 30 days.

Sinatra rack-protection versions 1.5.4 and 2.0.0.rc3 and earlier contains a timing attack vulnerability in the CSRF token checking that can result in signatures can be exposed. This attack appear to be exploitable via network connectivity to the ruby application. This vulnerability appears to have been fixed in 1.5.5 and 2.0.0.

Affected products

• Sinatrarb Rack-Protection: before 1.5.5 (fixed in 1.5.5); version 2.0.0 only

Published 2018-03-07. Last modified 2026-06-17.