CVE Tools
Sign in

CVE-2024-26142

Rails possible ReDoS vulnerability in Accept header parsing in Action Dispatch

Published: Feb 27, 2024Updated: Feb 14, 2025 Sources: CVE List NVD GHSACWE-1333
NVD MITRE
7.5CVSSHIGH
EPSS Score
1.5%
Top 29.1%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-1333

Affected Products

railsrails
Library
OSS Libraries / web-framework
railsrubyonrailsOSS Libraries
actionpackRubyGemsOSS Libraries
railsoss-projectOSS Librariesaka rails-html-sanitizer, activestorage
rubyonrailsoss-projectUSOSS Librariesaka rails, ruby on rails, rubyonrails.org
rubygemspackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/rails/rails/security/advisories/GHSA-jjhx-jhvp-74wq
github.com
https://github.com/rails/rails/commit/b4d3bfb5ed8a5b5a90aad3a3b28860c7a931e272
github.com
https://discuss.rubyonrails.org/t/possible-redos-vulnerability-in-accept-header-parsing-in-action-dispatch/84946
discuss.rubyonrails.org
and 4 more references View all →

Timeline

Published
Feb 27, 2024
Last Updated
Feb 14, 2025

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2024-26142 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows