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No exploitation reportedFix available

CVE-2019-5419

No exploitation reported by the sources we read.

  • Published2019-03-27
  • Fixed in6.0.0.beta3 · 5.2.2.1 · 5.1.6.2 · 5.0.7.2 · 4.2.11.1
  • WeaknessCWE-400 · CWE-770

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

There is a possible denial of service vulnerability in Action View (Rails) <5.2.2.1, <5.1.6.2, <5.0.7.2, <4.2.11.1 where specially crafted accept headers can cause action view to consume 100% cpu and make the server unresponsive.

Timeline

dates in UTC
  1. 2019-03-2714:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-5419?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-5419?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV · NVD
Ruby on Rails
BranchAffectedFixed in
6.0≥ 6.0.0.beta1, < 6.0.0.beta36.0.0.beta3
5.2≥ 5.2.0, < 5.2.2.15.2.2.1
5.1≥ 5.1.0, < 5.1.6.25.1.6.2
5.0≥ 5.0.0, < 5.0.7.25.0.7.2
4.2< 4.2.11.14.2.11.1
4.x≥ 4.0.0, < 4.2.11.14.2.11.1
Opensuse leap
BranchAffectedFixed in
15.0= 15.0no fix published
15.1= 15.1no fix published
Redhat cloudforms
BranchAffectedFixed in
4.6= 4.6no fix published
4.7= 4.7no fix published

3 more products in the sources.

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

  • ansible-towerRed Hat:cloudforms_managementengine:5.10::el7all versions · fixed in 0:3.4.3-1.el7atand 5 other packages
  • cfmeRed Hat:cloudforms_managementengine:5.10::el7all versions · fixed in 0:5.10.3.3-1.el7cfand 8 other packages
  • cfmeRed Hat:cloudforms_managementengine:5.9::el7all versions · fixed in 0:5.9.9.3-1.el7cfand 8 other packages
  • 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 2:5.2.2.1+dfsg-1
  • railsDebian:13all versions · fixed in 2:5.2.2.1+dfsg-1
  • railsDebian:12all versions · fixed in 2:5.2.2.1+dfsg-1

25 more package ranges on OSV.dev

Vendor advisories

  • CVE-2019-5419 Red Hat Product Security75 products fixed

    rubygem-actionpack: denial of service vulnerability in Action View

  • RHSA-2019:1289 Red Hat Product Security13 products fixed

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

  • RHSA-2019:1149 Red Hat Product Security21 products fixed

    Red Hat Security Advisory: rh-ror42-rubygem-actionpack security update

  • RHSA-2019:1147 Red Hat Product Security21 products fixed

    Red Hat Security Advisory: rh-ror50-rubygem-actionpack security update

  • RHSA-2019:0796 Red Hat Product Security20 products fixed

    Red Hat Security Advisory: CloudForms 4.7.3 security, bug fix and enhancement update

Full record on NVD

Fix

  1. Update Ruby on Rails to 6.0.0.beta3 · 5.2.2.1 · 5.1.6.2 · 5.0.7.2 · 4.2.11.1
  2. Vendor fix Red Hat Product Security RHSA-2019:1289 · 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. Vendor fix Red Hat Product Security RHSA-2019:1149 · 21 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

Advisories and patches

Detection

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

Sources

  • NVDCVSS 3.17.5read 2026-10-23
  • NVDCVSS 2.07.8read 2026-10-23
  • CNAweakness (CWE)CWE-400known since 2026-10-23
  • NVDweakness (CWE)CWE-770read 2026-10-23
  • FIRST EPSSEPSS score8.8 %2026-11-03
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2020-06-16

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2019-03-27
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-m63j-wh5w-c252

Frequently asked questions

What is CVE-2019-5419?

There is a possible denial of service vulnerability in Action View (Rails) <5.2.2.1, <5.1.6.2, <5.0.7.2, <4.2.11.1 where specially crafted accept headers can cause action view to consume 100% cpu and make the server unresponsive.

Is CVE-2019-5419 actively exploited?

Active exploitation of CVE-2019-5419 has not been confirmed. Its EPSS score was 8.8% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-5419?

CVE-2019-5419 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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