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CVE-2018-16476· NVD / CVE Program· CNA hackerone

A Broken Access Control vulnerability in Active Job versions >= 4.2.0 allows an attacker to craft user input which can cause Active Job to d

A Broken Access Control vulnerability in Active Job versions >= 4.2.0 allows an attacker to craft user input which can cause Active Job to deserialize it using GlobalId and give them access to information that they should not have. This vulnerability has been fixed in versions 4.2.11, 5.0.7.1, 5.1.6.1, and 5.2.1.1.

HighCVSS 7.5 · v3.0—No exploit Fix available
Published
Nov 30, 2018
Updated
Jun 16, 2026
EPSS
2.6% · 84th percentile
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Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.6%

Affected systems

VendorProduct
rubyonrailsrails
redhatcloudforms

Affected versions

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

  • redhat cloudforms4.6
  • rubyonrails rails4.2.0 and later · before 4.2.11
  • rubyonrails rails5.0.0 and later · before 5.0.7.1
  • rubyonrails rails5.1.0 and later · before 5.1.6.1
  • rubyonrails rails5.2.0 and later · before 5.2.1.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (hackerone). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a https://github.com/rails/rails

    • 4.2.0 up to and before 4.2.11, 4.2.0 up to and before 5.0.7.1, 4.2.0 up to and before 5.1.6.1, 4.2.0 up to and before 5.2.1.1affected

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12railsbefore 2:5.2.2+dfsg-12:5.2.2+dfsg-1
Red Hat:cloudforms_managementengine:5.9::el7cfmebefore 0:5.9.9.1-1.el7cf0:5.9.9.1-1.el7cf
Red Hat:cloudforms_managementengine:5.9::el7cfme-amazon-smartstatebefore 0:5.9.9.1-1.el7cf0:5.9.9.1-1.el7cf
Red Hat:cloudforms_managementengine:5.9::el7cfme-appliancebefore 0:5.9.9.1-1.el7cf0:5.9.9.1-1.el7cf
Red Hat:cloudforms_managementengine:5.9::el7cfme-appliance-commonbefore 0:5.9.9.1-1.el7cf0:5.9.9.1-1.el7cf
Red Hat:cloudforms_managementengine:5.9::el7cfme-appliance-debuginfobefore 0:5.9.9.1-1.el7cf0:5.9.9.1-1.el7cf
Red Hat:cloudforms_managementengine:5.9::el7cfme-appliance-toolsbefore 0:5.9.9.1-1.el7cf0:5.9.9.1-1.el7cf
Red Hat:cloudforms_managementengine:5.9::el7cfme-debuginfobefore 0:5.9.9.1-1.el7cf0:5.9.9.1-1.el7cf
Red Hat:cloudforms_managementengine:5.9::el7cfme-gemsetbefore 0:5.9.9.1-1.el7cf0:5.9.9.1-1.el7cf
Red Hat:cloudforms_managementengine:5.9::el7cfme-gemset-debuginfobefore 0:5.9.9.1-1.el7cf0:5.9.9.1-1.el7cf
RubyGemsactivejobfrom 4.2.0 · before 4.2.114.2.11
RubyGemsactivejobfrom 5.0.0 · before 5.0.7.15.0.7.1
RubyGemsactivejobfrom 5.1.0 · before 5.1.6.15.1.6.1
RubyGemsactivejobfrom 5.2.0 · before 5.2.1.15.2.1.1
SUSE:Linux Enterprise High Availability Extension 15rubygem-activejob-5_1before 5.1.4-3.3.15.1.4-3.3.1
SUSE:OpenStack Cloud 7rubygem-activejob-4_2before 4.2.9-3.6.14.2.9-3.6.1

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 accepKEV
    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, anKEV
    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 gene
    66This week
  • CVE-2020-8163The is a code injection vulnerability in versions of Rails prior to 5.0.1 that wouldallow an attacker who controlled the `locals` argument o
    60This week
  • CVE-2013-0156active_support/core_ext/hash/conversions.rb in Ruby on Rails before 2.3.15, 3.0.x before 3.0.19, 3.1.x before 3.1.10, and 3.2.x before 3.2.1
    60This week
  • CVE-2013-0333lib/active_support/json/backends/yaml.rb in Ruby on Rails 2.3.x before 2.3.16 and 3.0.x before 3.0.20 does not properly convert JSON data to
    59Plan

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:rails2:5.2.2+dfsg-1 · Debian:12Package registry (OSV)
red hat:cfme0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7Package registry (OSV)
red hat:cfme-amazon-smartstate0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7Package registry (OSV)
red hat:cfme-appliance0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7Package registry (OSV)
red hat:cfme-appliance-common0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7Package registry (OSV)
red hat:cfme-appliance-debuginfo0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7Package registry (OSV)
red hat:cfme-appliance-tools0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7Package registry (OSV)
red hat:cfme-debuginfo0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7Package registry (OSV)
red hat:cfme-gemset0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7Package registry (OSV)
red hat:cfme-gemset-debuginfo0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7Package registry (OSV)
RubyGems:activejob4.2.11Package registry (OSV)
RubyGems:activejob5.0.7.1Package registry (OSV)
RubyGems:activejob5.1.6.1Package registry (OSV)
RubyGems:activejob5.2.1.1Package registry (OSV)
suse:rubygem-activejob-4_24.2.9-3.6.1 · SUSE:OpenStack Cloud 7Package registry (OSV)
suse:rubygem-activejob-5_15.1.4-3.3.1 · SUSE:Linux Enterprise High Availability Extension 15Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

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.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

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

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

nvd-primary

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Change log

  1. Fix✗ → ✓

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References

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

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