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.
- Published
- Nov 30, 2018
- Updated
- Jun 16, 2026
- EPSS
- 2.6% · 84th percentile
- CWE
- CWE-284
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Report tools
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
| Vendor | Product | CPE |
|---|---|---|
| rubyonrails | rails | cpe:2.3:a:rubyonrails:rails |
| redhat | cloudforms | cpe:2.3:a:redhat:cloudforms |
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.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | rails | before 2:5.2.2+dfsg-1 | 2:5.2.2+dfsg-1 |
| Red Hat:cloudforms_managementengine:5.9::el7 | cfme | before 0:5.9.9.1-1.el7cf | 0:5.9.9.1-1.el7cf |
| Red Hat:cloudforms_managementengine:5.9::el7 | cfme-amazon-smartstate | before 0:5.9.9.1-1.el7cf | 0:5.9.9.1-1.el7cf |
| Red Hat:cloudforms_managementengine:5.9::el7 | cfme-appliance | before 0:5.9.9.1-1.el7cf | 0:5.9.9.1-1.el7cf |
| Red Hat:cloudforms_managementengine:5.9::el7 | cfme-appliance-common | before 0:5.9.9.1-1.el7cf | 0:5.9.9.1-1.el7cf |
| Red Hat:cloudforms_managementengine:5.9::el7 | cfme-appliance-debuginfo | before 0:5.9.9.1-1.el7cf | 0:5.9.9.1-1.el7cf |
| Red Hat:cloudforms_managementengine:5.9::el7 | cfme-appliance-tools | before 0:5.9.9.1-1.el7cf | 0:5.9.9.1-1.el7cf |
| Red Hat:cloudforms_managementengine:5.9::el7 | cfme-debuginfo | before 0:5.9.9.1-1.el7cf | 0:5.9.9.1-1.el7cf |
| Red Hat:cloudforms_managementengine:5.9::el7 | cfme-gemset | before 0:5.9.9.1-1.el7cf | 0:5.9.9.1-1.el7cf |
| Red Hat:cloudforms_managementengine:5.9::el7 | cfme-gemset-debuginfo | before 0:5.9.9.1-1.el7cf | 0:5.9.9.1-1.el7cf |
| RubyGems | activejob | from 4.2.0 · before 4.2.11 | 4.2.11 |
| RubyGems | activejob | from 5.0.0 · before 5.0.7.1 | 5.0.7.1 |
| RubyGems | activejob | from 5.1.0 · before 5.1.6.1 | 5.1.6.1 |
| RubyGems | activejob | from 5.2.0 · before 5.2.1.1 | 5.2.1.1 |
| SUSE:Linux Enterprise High Availability Extension 15 | rubygem-activejob-5_1 | before 5.1.4-3.3.1 | 5.1.4-3.3.1 |
| SUSE:OpenStack Cloud 7 | rubygem-activejob-4_2 | before 4.2.9-3.6.1 | 4.2.9-3.6.1 |
Same product
rubyonrails: all recordsOther highest-scoring records for the same primary product.
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- 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, anKEV89Now
- 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 gene66This 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 o60This 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 3.2.160This 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 to59Plan
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| debian:rails | 2:5.2.2+dfsg-1 · Debian:12 | Package registry (OSV) |
| red hat:cfme | 0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7 | Package registry (OSV) |
| red hat:cfme-amazon-smartstate | 0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7 | Package registry (OSV) |
| red hat:cfme-appliance | 0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7 | Package registry (OSV) |
| red hat:cfme-appliance-common | 0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7 | Package registry (OSV) |
| red hat:cfme-appliance-debuginfo | 0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7 | Package registry (OSV) |
| red hat:cfme-appliance-tools | 0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7 | Package registry (OSV) |
| red hat:cfme-debuginfo | 0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7 | Package registry (OSV) |
| red hat:cfme-gemset | 0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7 | Package registry (OSV) |
| red hat:cfme-gemset-debuginfo | 0:5.9.9.1-1.el7cf · Red Hat:cloudforms_managementengine:5.9::el7 | Package registry (OSV) |
| RubyGems:activejob | 4.2.11 | Package registry (OSV) |
| RubyGems:activejob | 5.0.7.1 | Package registry (OSV) |
| RubyGems:activejob | 5.1.6.1 | Package registry (OSV) |
| RubyGems:activejob | 5.2.1.1 | Package registry (OSV) |
| suse:rubygem-activejob-4_2 | 4.2.9-3.6.1 · SUSE:OpenStack Cloud 7 | Package registry (OSV) |
| suse:rubygem-activejob-5_1 | 5.1.4-3.3.1 · SUSE:Linux Enterprise High Availability Extension 15 | Package 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.
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.
Credits
All researchersFinders, 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
Weakness class (CWE)
CWE-284 · Improper Access ControlCVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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.
Attack patterns (CAPEC)
- Embedding Scripts within ScriptsCAPEC-19likelihood: High · High
- Malicious Logic InsertionCAPEC-441likelihood: Medium · High
- Modification of Windows Service ConfigurationCAPEC-478likelihood: Low · High
- Malicious Root CertificateCAPEC-479likelihood: Low · Low
- Intent SpoofCAPEC-502
- WebView ExposureCAPEC-503
- Data Injected During ConfigurationCAPEC-536likelihood: Low · High
- Incomplete Data Deletion in a Multi-Tenant EnvironmentCAPEC-546likelihood: Low · Medium
ATT&CK techniques
- RootkitT1014
- Obfuscated Files or Information: Embedded PayloadsT1027.009
- Boot or Logon Initialization ScriptsT1037
- Taint shared contentT1080
- Server Software Component: Terminal Services DLLT1505.005
- Pre-OS Boot:BootkitT1542.003
- Create or Modify System ProcessT1543
- Create or Modify System Process: Launch AgentT1543.001
- Create or Modify System Process:Windows ServiceT1543.003
- Create or Modify System Process: Launch DaemonT1543.004
- Event Triggered Execution:Change Default File AssociationT1546.001
- Event Triggered Execution:.bash_profile and .bashrcT1546.004
- Event Triggered Execution: Accessibility FeaturesT1546.008
- Event Triggered Execution: Installer PackagesT1546.016
- Boot or Logon Autostart ExecutionT1547
- Boot or Logon Autostart Execution:Kernel Modules and ExtensionsT1547.006
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
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References
- access.redhat.com/errata/RHSA-2019:0600
- weblog.rubyonrails.org/2018/11/27/Rails-4-2-5-0-5-1-5-2-have-been-released/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.