CVE-2023-22792: Rubyonrails Rails

High severity, CVSS 7.5. EPSS: 1.7% chance of exploitation in the next 30 days.

A regular expression based DoS vulnerability in Action Dispatch <6.0.6.1,< 6.1.7.1, and <7.0.4.1. Specially crafted cookies, in combination with a specially crafted X_FORWARDED_HOST header can cause the regular expression engine to enter a state of catastrophic backtracking. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability All users running an affected release should either upgrade or use one of the workarounds immediately.

Affected products

• Rubyonrails Rails: from 3.0.0, before 6.0.6.1 (fixed in 6.0.6.1); from 6.1.0, before 6.1.7.1 (fixed in 6.1.7.1); from 7.0.0, before 7.0.4.1 (fixed in 7.0.4.1)

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