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CVE

CVE-2024-26142

Rails is a web-application framework. Starting in version 7.1.0, there is a possible ReDoS vulnerability in the Accept h

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.

HIGH · CVSS 7.5 EPSS 0.03542
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules3 YARA rules0
⬡

Weakness Classification

CWE-1333Inefficient Regular Expression Complexity
CWE-1333Inefficient Regular Expression Complexity
▤

Affected Products & Versions

1
rubyonrails rails>= 7.1.0 and < 7.1.3.1
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
RubyGems actionpack LOW fixed in 7.1.3.1
◈

Sigma Hunt Rules

3
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumRuby on Rails Framework Exceptions
productmediumPotential Ruby Reverse Shell
productmediumRuby Inline Command Execution
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD27 Feb 2024 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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
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