CVE-2019-5418

99

FAUCET Score

CVE-2019-5418 is a critical file content disclosure vulnerability affecting multiple versions of Ruby on Rails, including Action View <5.2.2.1, <5.1.6.2, <5.0.7.2, <4.2.11.1, and v3, as well as various Linux distributions. An unauthenticated attacker can exploit this flaw remotely by sending specially crafted accept headers, leading to the exposure of arbitrary files on the target system. With a CVSS score of 7.5 (HIGH) and an EPSS score indicating high exploitability, this vulnerability poses a significant risk due to its low attack complexity and severe impact on confidentiality. This CVE is actively exploited in the wild, with public exploit code available in Metasploit and ExploitDB, and has garnered substantial community discussion and media coverage, underscoring its importance for immediate remediation.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		>= 3.0.0, < 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:H/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

Exploitability Score

3.9

Impact Score

3.6

CvssVersion

3.1

Exploit Intelligence

EPSS Score

98.51%

Probability of exploitation in next 30 days

EPSS Percentile

99.9%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

Added to KEV · Jul 7, 2025

Nuclei: CVE-2019-5418 · Apr 8, 2020

ExploitDB: EDB-46585 · Mar 21, 2019

This CVE's current EPSS score of 0.9851 is in the 100th percentile among its peer group of 51,506 CVEs.

Social Chatter

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 (29)

arubapatch availablevia llm_extracted

Fixed in: 4.2.11.1, 5.0.7.2, 5.1.6.2, 5.2.2.1, 6.0.0.beta3

boschpatch availablevia llm_extracted

Fixed in: 4.2.11.1, 5.0.7.2, 5.1.6.2, 5.2.2.1, 6.0.0.beta3

infobloxpatch availablevia llm_extracted

Fixed in: 4.2.11.1, 5.0.7.2, 5.1.6.2, 5.2.2.1, 6.0.0.beta3

nessuspatch availablevia llm_extracted

Fixed in: 4.2.11.1, 5.0.7.2, 5.1.6.2, 5.2.2.1, 6.0.0.beta3

power_bipatch availablevia llm_extracted

Fixed in: 4.2.11.1, 5.0.7.2, 5.1.6.2, 5.2.2.1, 6.0.0.beta3

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 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

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: 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 6Fixed in: rh-ror42-rubygem-actionpack-1:4.2.6-5.el6

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

rubygemspatch availablevia ghsa

Product: actionviewFixed in: 5.1.6.2

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: 5.0.7.2

vmwarepatch availablevia llm_extracted

Fixed in: 4.2.11.1, 5.0.7.2, 5.1.6.2, 5.2.2.1, 6.0.0.beta3

Vendor Advisories (8)

rubygemsGHSA-86g5-2wh3-gc9jhigh

Path Traversal in Action View

redhatCVE-2019-5418Important

rubygem-actionpack: render file directory traversal in Action View

aruballm-aruba-4ebe13fa3638e127HIGH

Rails 4.2.11.1, 5.0.7.2, 5.1.6.2, 5.2.2.1, and 6.0.0.beta3 have been released!

vmwarellm-vmware-a7f49dc294fdf5d4HIGH

Rails 4.2.11.1, 5.0.7.2, 5.1.6.2, 5.2.2.1, and 6.0.0.beta3 have been released!

infobloxllm-infoblox-dc8d4b76db1b7dfbHIGH

Rails 4.2.11.1, 5.0.7.2, 5.1.6.2, 5.2.2.1, and 6.0.0.beta3 have been released!

power_billm-power_bi-225a973cb758f893HIGH

Rails 4.2.11.1, 5.0.7.2, 5.1.6.2, 5.2.2.1, and 6.0.0.beta3 have been released!

boschllm-bosch-03b19d8072da1514HIGH

Rails 4.2.11.1, 5.0.7.2, 5.1.6.2, 5.2.2.1, and 6.0.0.beta3 have been released!

nessusllm-nessus-ceb804e768466085HIGH

Rails 4.2.11.1, 5.0.7.2, 5.1.6.2, 5.2.2.1, and 6.0.0.beta3 have been released!

References

web.archive.org / web/20190313201629/https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released

PatchVendor Advisory

cisa.gov / known-exploited-vulnerabilities-catalog

US Government Resource

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

Mailing ListThird Party Advisory

packetstormsecurity.com / files/152178/Rails-5.2.1-Arbitrary-File-Content-Disclosure.html

ExploitThird Party AdvisoryVDB Entry

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

Permissions Required

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

Third Party Advisory

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

Broken LinkPatchVendor Advisory

exploit-db.com / exploits/46585

ExploitThird Party AdvisoryVDB Entry

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

Mailing ListMitigationPatchThird Party Advisory