CVE-2019-5419

22

FAUCET Score

CVE-2019-5419 is a denial-of-service vulnerability affecting Action View in various Ruby on Rails versions (5.2.2.1, 5.1.6.2, 5.0.7.2, 4.2.11.1 and earlier), as well as distributions like Debian, Fedora, openSUSE, and Red Hat. Attackers can exploit this flaw by sending specially crafted accept headers, causing the server's CPU to reach 100% utilization and become unresponsive. This vulnerability has a CVSS score of 7.5 (High), indicating a network-based attack with low complexity and high impact on availability. While there is no evidence of active exploitation, no public exploit code, and it's not on the KEV catalog, there has been some community discussion and media coverage, though it's often confused with CVE-2019-5418.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 4.2.11.1CPE matchmatch criteria	cpe:2.3:a:rubyonrails:rails::::::::
		>= 5.0.0, < 5.0.7.2CPE matchmatch criteria	cpe:2.3:a:rubyonrails:rails::::::::
		>= 5.1.0, < 5.1.6.2CPE matchmatch criteria	cpe:2.3:a:rubyonrails:rails::::::::
		>= 5.2.0, < 5.2.2.1CPE matchmatch criteria	cpe:2.3:a:rubyonrails:rails::::::::
		8.0CPE matchmatch criteria	cpe:2.3:o:debian:debian_linux:8.0:::::::*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

Exploitability Score

3.9

Impact Score

3.6

CvssVersion

3.1

Exploit Intelligence

EPSS Score

8.67%

Probability of exploitation in next 30 days

EPSS Percentile

94.6%

Percentile rank of EPSS score among Peer Group

As of 2026-07-28

Model: v2026.06.15

This CVE's current EPSS score of 0.0867 is in the 91st percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (24)

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-ror42-rubygem-actionpack-1:4.2.6-5.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-ror50-rubygem-actionpack-1:5.0.1-2.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.4 EUSFixed in: rh-ror42-rubygem-actionpack-1:4.2.6-5.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-ror50-rubygem-actionpack-1:5.0.1-2.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.5 EUSFixed in: rh-ror42-rubygem-actionpack-1:4.2.6-5.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUSFixed in: rh-ror50-rubygem-actionpack-1:5.0.1-2.el7

redhatpatch availablevia redhat_api

Product: CloudForms Management Engine 5.10Fixed in: ansible-tower-0:3.4.3-1.el7at

redhatpatch availablevia redhat_api

Product: CloudForms Management Engine 5.10Fixed in: cfme-0:5.10.3.3-1.el7cf

redhatpatch availablevia redhat_api

Product: CloudForms Management Engine 5.10Fixed in: cfme-amazon-smartstate-0:5.10.3.3-1.el7cf

redhatpatch availablevia redhat_api

Product: CloudForms Management Engine 5.10Fixed in: cfme-appliance-0:5.10.3.3-1.el7cf

redhatpatch availablevia redhat_api

Product: CloudForms Management Engine 5.10Fixed in: cfme-gemset-0:5.10.3.3-1.el7cf

redhatpatch availablevia redhat_api

Product: CloudForms Management Engine 5.9Fixed in: cfme-0:5.9.9.3-1.el7cf

redhatpatch availablevia redhat_api

Product: CloudForms Management Engine 5.9Fixed in: cfme-amazon-smartstate-0:5.9.9.3-1.el7cf

redhatpatch availablevia redhat_api

Product: CloudForms Management Engine 5.9Fixed in: cfme-appliance-0:5.9.9.3-1.el7cf

redhatpatch availablevia redhat_api

Product: CloudForms Management Engine 5.9Fixed in: cfme-gemset-0:5.9.9.3-1.el7cf

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-ror50-rubygem-actionpack-1:5.0.1-2.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-ror42-rubygem-actionpack-1:4.2.6-5.el6

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-ror50-rubygem-actionpack-1:5.0.1-2.el7

redhatpatch availablevia redhat_api

Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-ror42-rubygem-actionpack-1:4.2.6-5.el7

rubygemspatch availablevia ghsa

Product: actionviewFixed in: 5.0.7.2

rubygemspatch availablevia ghsa

Product: actionviewFixed in: 4.2.11.1

rubygemspatch availablevia ghsa

Product: actionviewFixed in: 5.2.2.1

rubygemspatch availablevia ghsa

Product: actionviewFixed in: 6.0.0.beta3

rubygemspatch availablevia ghsa

Product: actionviewFixed in: 5.1.6.2

Vendor Advisories (2)

rubygemsGHSA-m63j-wh5w-c252high

Denial of Service Vulnerability in Action View

redhatCVE-2019-5419Moderate

rubygem-actionpack: denial of service vulnerability in Action View

References

lists.opensuse.org / opensuse-security-announce/2019-05/msg00011.html

Mailing ListThird Party Advisory

lists.opensuse.org / opensuse-security-announce/2019-06/msg00025.html

Mailing ListThird Party Advisory

lists.opensuse.org / opensuse-security-announce/2019-08/msg00001.html

Mailing ListThird Party Advisory

access.redhat.com / errata/RHSA-2019:0796

Third Party Advisory

access.redhat.com / errata/RHSA-2019:1147

Third Party Advisory

access.redhat.com / errata/RHSA-2019:1149

Third Party Advisory

access.redhat.com / errata/RHSA-2019:1289

Third Party Advisory

groups.google.com / forum

lists.debian.org / debian-lts-announce/2019/03/msg00042.html

Mailing ListThird Party Advisory

lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/Y43636TH4D6T46IC6N2RQVJTRFJAAYGA

weblog.rubyonrails.org / 2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released

PatchThird Party Advisory

openwall.com / lists/oss-security/2019/03/22/1

ExploitMailing ListMitigationPatchThird Party Advisory