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No exploitation reportedFix available

CVE-2018-16476

No exploitation reported by the sources we read.

  • Published2018-11-30
  • Fixed in5.2.1.1 · 5.1.6.1 · 5.0.7.1 · 4.2.11
  • WeaknessCWE-284 · CWE-502

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2018-11-3019:29CVE publishedNVD

Versions per branch

NVD · OSV
Ruby on Rails
BranchAffectedFixed in
5.2≥ 5.2.0, < 5.2.1.15.2.1.1
5.1≥ 5.1.0, < 5.1.6.15.1.6.1
5.0≥ 5.0.0, < 5.0.7.15.0.7.1
4.2≥ 4.2.0, < 4.2.114.2.11
Redhat cloudforms
BranchAffectedFixed in
4.6= 4.6no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • cfmeRed Hat:cloudforms_managementengine:5.9::el7all versions · fixed in 0:5.9.9.1-1.el7cfand 8 other packages
  • railsUbuntu:Pro:22.04:LTSall versions · no fixed version listed
  • railsUbuntu:Pro:20.04:LTSall versions · no fixed version listed
  • railsUbuntu:Pro:18.04:LTSall versions · no fixed version listed
  • railsUbuntu:Pro:16.04:LTSall versions · no fixed version listed
  • railsDebian:14all versions · fixed in 2:5.2.2+dfsg-1
  • railsDebian:13all versions · fixed in 2:5.2.2+dfsg-1
  • railsDebian:12all versions · fixed in 2:5.2.2+dfsg-1

4 more package ranges on OSV.dev

Vendor advisories

  • CVE-2018-16476 Red Hat Product Security13 products fixed · 6 known affected

    activejob: Information Exposure through deserialization using GlobalId

    tfm-ror51-rubygem-activejob as a component of Red Hat Satellite 6 · tfm-ror51-rubygem-activejob.src as a component of Red Hat Satellite 6 · rh-ror42-rubygem-activejob-doc as a component of Red Hat Software Collections · +3 more

  • RHSA-2019:0600 Red Hat Product Security13 products fixed

    Red Hat Security Advisory: CloudForms 4.6.9 security, bug fix and enhancement update

Full record on NVD

Fix

  1. Update Ruby on Rails to 5.2.1.1 · 5.1.6.1 · 5.0.7.1 · 4.2.11
  2. Vendor fix Red Hat Product Security RHSA-2019:0600 · 13 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 If the postgresql service is running, it will be automatically restarted after installing this update. After installing the updated packages, the http…
  3. No fix planned, says the vendor Red Hat Product Security CVE-2018-16476 · 6 productsWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.07.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-284known since 2026-10-23
  • NVDweakness (CWE)CWE-502read 2026-10-23
  • FIRST EPSSEPSS score2.9 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2020-06-16

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2018-11-30
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-q2qw-rmrh-vv42

Frequently asked questions

What is CVE-2018-16476?

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.

Is CVE-2018-16476 actively exploited?

Active exploitation of CVE-2018-16476 has not been confirmed. Its EPSS score was 2.9% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-16476?

CVE-2018-16476 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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