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ExploitedIn CISA KEVFix available

CVE-2019-5418

Exploitation confirmed. First attested on 2025-07-07 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2019-03-27
  • Fixed in5.2.2.1 · 5.1.6.2 · 5.0.7.2 · 4.2.11.1
  • WeaknessCWE-22

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 File Content Disclosure vulnerability in Action View <5.2.2.1, <5.1.6.2, <5.0.7.2, <4.2.11.1 and v3 where specially crafted accept headers can cause contents of arbitrary files on the target system's filesystem to be exposed.

Timeline

dates in UTC
  1. 2019-03-21Exploit-DB entryExploit-DB
  2. 2019-03-2714:29CVE publishedNVD
  3. 2025-07-07Added to the CISA KEV catalogCISA KEV
  4. 2025-07-07Listed as exploited by GCVEGCVE
  5. 2025-07-07Exploitation first reportedCISA KEV
  6. 2025-07-1703:55SSVC exploitation set to activeCISA-ADP

Versions per branch

NVD · OSV
Ruby on Rails
BranchAffectedFixed in
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≥ 3.0.0, < 4.2.11.14.2.11.1
4.x≥ 4.0.0, < 4.2.11.14.2.11.1
Redhat cloudforms
BranchAffectedFixed in
4.7= 4.7no fix published
4.6= 4.6no fix published
Debian debian linux
BranchAffectedFixed in
8.0= 8.0no 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.

Products declared by the CNA1 product

As hackerone, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Rails https://github.com/rails/rails
    Affected
    • = 5.2.2.1no fix stated
    • = 5.1.6.2no fix stated
    • = 5.0.7.2no fix stated
    • = 4.2.11.1no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2019-10-11

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 · fixed in 2:4.2.10-0ubuntu4+esm2
  • railsUbuntu:Pro:16.04:LTSall versions · fixed in 2:4.2.6-1ubuntu0.1~esm2
  • 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

20 more package ranges on OSV.dev

Vendor advisories

  • CVE-2019-5418 Red Hat Product Security75 products fixed

    rubygem-actionpack: render file directory traversal 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 5.2.2.1 · 5.1.6.2 · 5.0.7.2 · 4.2.11.1
  2. CISA’s required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.due 2025-07-28
  3. 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…
  4. 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

read 2026-11-01 01:02 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
EDB-46585
Exploit-DB
Proof of concept
Metasploit modules
1 moduleauxiliary/gather/rails_doubletap_file_readrank: normalModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2025-07-07
Patch Due Date
2025-07-28
Ransomware Use
Unknown
Required Action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2019-03-27
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-86g5-2wh3-gc9j

Frequently asked questions

What is CVE-2019-5418?

There is a File Content Disclosure vulnerability in Action View <5.2.2.1, <5.1.6.2, <5.0.7.2, <4.2.11.1 and v3 where specially crafted accept headers can cause contents of arbitrary files on the target system's filesystem to be exposed.

Is CVE-2019-5418 actively exploited?

Yes. CVE-2019-5418 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-07-28.

What is the CVSS score for CVE-2019-5418?

CVE-2019-5418 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:H/I:N/A:N.

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