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CVE-2013-6414: actionpack/lib/action_view/lookup_context.rb in Action View in Ruby on Rails 3.x before 3.2.16 and 4.x before 4.0.2 allows remote attackers…

MediumCVSS 5.0 · v2.0—Weaponized Fix available

Noroxi assessment

Priority: Plan (action score 40/100)

  • A ready-made attack module is public (Metasploit); exploiting it takes no special expertise.
  • Because a ready-made attack tool exists, priority is at least “Plan”.
  • Probability of exploitation in the next 30 days: 20.7% (FIRST EPSS); higher than 97.5% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: ruby-actionpack-3.2 (Debian:7) 3.2.6-6+deb7u1; ruby193-rubygem-actionpack (Red Hat:rhel_software_collections:1::el6) 1:3.2.8-5.1.el6; ruby193-rubygem-actionpack-doc (Red Hat:rhel_software_collections:1::el6) 1:3.2.8-5.1.el6.

Add it to your regular patch cycle. Upgrade to ruby-actionpack-3.2 (Debian:7) 3.2.6-6+deb7u1; ruby193-rubygem-actionpack (Red Hat:rhel_software_collections:1::el6) 1:3.2.8-5.1.el6; ruby193-rubygem-actionpack-doc (Red Hat:rhel_software_collections:1::el6) 1:3.2.8-5.1.el6 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

actionpack/lib/action_view/lookup_context.rb in Action View in Ruby on Rails 3.x before 3.2.16 and 4.x before 4.0.2 allows remote attackers to cause a denial of service (memory consumption) via a header containing an invalid MIME type that leads to excessive caching.

Published
Dec 6, 2013
Updated
Jun 16, 2026
EPSS
20.7% · 97th percentile

Report tools

JSON

Action score

40

Plan

Add it to your regular patch cycle.

CVSS
20 / 40 · 5.0 / 10
CISA KEV
0 / 30 · Not listed
EPSS
6 / 30 · 20.7%
Ready-made attack tool
14 / 40 · floor: at least 40

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Weaponized exploit exists
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2013-6414

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
rubyonrailsrails
rubyonrailsruby on rails

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • rubyonrails railsup to 4.0.1 inclusive
  • rubyonrails rails3.0.0
  • rubyonrails rails3.0.1
  • rubyonrails rails3.0.10
  • rubyonrails rails3.0.11
  • rubyonrails rails3.0.12
  • rubyonrails rails3.0.13
  • rubyonrails rails3.0.14
+12 more rows
  • rubyonrails rails3.0.16
  • rubyonrails rails3.0.17
  • rubyonrails rails3.0.18
  • rubyonrails rails3.0.19
  • rubyonrails rails3.0.2
  • rubyonrails rails3.0.20
  • rubyonrails rails3.0.3
  • rubyonrails rails3.0.4
  • rubyonrails rails3.0.5
  • rubyonrails rails3.0.6
  • rubyonrails rails3.0.7
  • rubyonrails rails3.0.8

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:7ruby-actionpack-3.2before 3.2.6-6+deb7u13.2.6-6+deb7u1
Red Hat:rhel_software_collections:1::el6ruby193-rubygem-actionpackbefore 1:3.2.8-5.1.el61:3.2.8-5.1.el6
Red Hat:rhel_software_collections:1::el6ruby193-rubygem-actionpack-docbefore 1:3.2.8-5.1.el61:3.2.8-5.1.el6
RubyGemsactionpackfrom 3.0.0 · before 3.2.163.2.16
RubyGemsactionpackfrom 4.0.0 · before 4.0.24.0.2

Same product

rubyonrails: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-5418There is a File Content Disclosure vulnerability in Action View <5.2.2.1, <5.1.6.2, <5.0.7.2, <4.2.11.1 and v3 where specially crafted…KEV
    90Now
  • CVE-2016-0752Directory traversal vulnerability in Action View in Ruby on Rails before 3.2.22.1, 4.0.x and 4.1.x before 4.1.14.1, 4.2.x before 4.2.5.1…KEV
    89Now
  • CVE-2019-5420A remote code execution vulnerability in development mode Rails <5.2.2.1, <6.0.0.beta3 can allow an attacker to guess the automatically…
    66This week

Published before and after this one in the same product

  • ← EarlierCVE-2013-4389Oct 16, 2013 · Multiple format string vulnerabilities in log_subscriber.rb files in the log subscriber component in Action Mailer in Ruby on Rails 3.x…
    18Monitor
  • ← EarlierCVE-2013-4491Dec 6, 2013 · Cross-site scripting (XSS) vulnerability in actionpack/lib/action_view/helpers/translation_helper.rb in the internationalization component…
    18Monitor
  • Later →CVE-2013-6415Dec 6, 2013 · Cross-site scripting (XSS) vulnerability in the number_to_currency helper in actionpack/lib/action_view/helpers/number_helper.rb in Ruby on…
    18Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:ruby-actionpack-3.23.2.6-6+deb7u1 · Debian:7Package registry (OSV)
red hat:ruby193-rubygem-actionpack1:3.2.8-5.1.el6 · Red Hat:rhel_software_collections:1::el6Package registry (OSV)
red hat:ruby193-rubygem-actionpack-doc1:3.2.8-5.1.el6 · Red Hat:rhel_software_collections:1::el6Package registry (OSV)
RubyGems:actionpack3.2.16Package registry (OSV)
RubyGems:actionpack4.0.2Package registry (OSV)

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Metasploit module ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Metasploit moduleauxiliary/dos/http/rails_action_viewRuby on Rails Action View MIME Memory Exhaustionauxiliary2013-12-04

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Metasploit-3 d
  2. Published
  3. TodayNov 14, 2026+4725 d

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate.

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
None
Integrity impact
None
Availability impact
P

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

References

Show all references (12 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records