CVE-2024-26142 Rails possible ReDoS vulnerability in Accept header parsing in Action Dispatch

What is CVE-2024-26142?

CVE-2024-26142 is a high-severity vulnerability in Rubyonrails Rails, published on 27 Feb 2024.

Official description

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.

Weakness: CWE-1333

Which versions are affected by CVE-2024-26142?

3 open source packages ship an affected version, including rails and actionpack. It affects 1 product.

Products include Rubyonrails Rails.

How do I fix CVE-2024-26142?

Upgrade rails to 7.1.4 or later.

Is CVE-2024-26142 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-26142 exists.

Other vulnerabilities in Rubyonrails Rails

• CVE-2013-0277 Active Record contains deserialization of arbitrary YAML Critical 10.0
• CVE-2017-17916 SQL injection in n/a High 8.1
• CVE-2017-17917 SQL injection in n/a High 8.1
• CVE-2026-33195 Rails Active Storage has possible Path Traversal in DiskService High 8.0
• CVE-2023-22792 ReDoS based DoS vulnerability in Action Dispatch High 7.5

All Rubyonrails Rails vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-rails-2024-26142, GHSA-jjhx-jhvp-74wq, UBUNTU-CVE-2024-26142.