CVE-2024-26142: Rubyonrails Rails

High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days.

Rails is a web-application framework. Starting in version 7.1.0, there is a possible ReDoS vulnerability in the Accept header parsing routines of Action Dispatch. This vulnerability is patched in 7.1.3.1. Ruby 3.2 has mitigations for this problem, so Rails applications using Ruby 3.2 or newer are unaffected.

Affected products

• Rubyonrails Rails: from 7.1.0, before 7.1.3.1 (fixed in 7.1.3.1)

Published 2024-02-27. Last modified 2026-06-17.