CVE-2024-26142

Name: CVE-2024-26142
Creator: NVD / NIST
Published: 2024-02-27T16:15:46.6+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.50%

Last modified Jun 17, 2026

CVE-2024-26142 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 1.50% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.50%

71.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Rubyonrails	Rails	>= 7.1.0, < 7.1.3.1

References

https://discuss.rubyonrails.org/t/possible-redos-vulnerability-in-accept-header-parsing-in-action-dispatch/84946Vendor Advisory
https://github.com/rails/rails/commit/b4d3bfb5ed8a5b5a90aad3a3b28860c7a931e272Patch
https://github.com/rails/rails/security/advisories/GHSA-jjhx-jhvp-74wqVendor Advisory
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2024-26142.ymlThird Party Advisory
https://security.netapp.com/advisory/ntap-20240503-0003/Third Party Advisory
https://discuss.rubyonrails.org/t/possible-redos-vulnerability-in-accept-header-parsing-in-action-dispatch/84946Vendor Advisory
https://github.com/rails/rails/commit/b4d3bfb5ed8a5b5a90aad3a3b28860c7a931e272Patch
https://github.com/rails/rails/security/advisories/GHSA-jjhx-jhvp-74wqVendor Advisory
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/actionpack/CVE-2024-26142.ymlThird Party Advisory
https://security.netapp.com/advisory/ntap-20240503-0003/Third Party Advisory

Timeline

Published: Feb 27, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2024-26142?

How severe is CVE-2024-26142?

CVE-2024-26142 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.50% probability of exploitation in the next 30 days.

How do I fix CVE-2024-26142?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-26142?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST