CVE-2019-5418 (GCVE-0-2019-5418)

Vulnerability from cvelistv5 – Published: 2019-03-27 13:38 – Updated: 2025-10-21 23:45
VLAI CISA KEVIntel
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: active Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-22 - Path Traversal (CWE-22)
Assigner
References
Impacted products
Vendor Product Version
Rails https://github.com/rails/rails Affected: 5.2.2.1
Affected: 5.1.6.2
Affected: 5.0.7.2
Affected: 4.2.11.1
Create a notification for this product.
Date Public
2019-03-13 00:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 5938e268-3154-438e-8838-ec14bac2155f

Vulnerability ID: CVE-2019-5418

Status: Confirmed

Status Updated: 2025-07-07 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2025-07-07
Asserted: 2025-07-07
Scope
Notes: KEV entry: Rails Ruby on Rails Path Traversal Vulnerability | Affected: Rails / Ruby on Rails | Description: Rails Ruby on Rails contains a path traversal vulnerability in Action View. Specially crafted accept headers in combination with calls to `render file:` can cause arbitrary files on the target server to be rendered, disclosing the file contents. | 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 date: 2025-07-28 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://web.archive.org/web/20190313201629/https://weblog.rubyonrails.org/2019/3/13/Rails-4-2-5-1-5-1-6-2-have-been-released/ ; https://nvd.nist.gov/vuln/detail/CVE-2019-5418
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-22
Feed CISA Known Exploited Vulnerabilities Catalog
Product Ruby on Rails
Due Date 2025-07-28
Date Added 2025-07-07
Vendorproject Rails
Vulnerabilityname Rails Ruby on Rails Path Traversal Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 12:25 UTC | Updated: 2026-02-06 07:17 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: a553c390-822f-42c0-97cb-232b4fb8cda3

Vulnerability ID: CVE-2019-5418

Status: Confirmed

Status Updated: 2026-06-01 10:36 UTC

Exploited: Yes

Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: KEVIntel entry: 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... | Affected: Rails / https://github.com/rails/rails | CVSS: 7.5 (HIGH) | EPSS: 0.98507 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title 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...
Vendor Rails
Product https://github.com/rails/rails
Added Date 2026-06-01T10:36:30.850Z
Cvss Score 7.5
Epss Score 0.98507
Cvss Severity HIGH
Epss Percentile 0.99914
Used In Malware unknown
Ahead Of Cisa Kev 
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Not Yet In Cisa Kev False
References
Created: 2026-06-23 14:03 UTC | Updated: 2026-07-10 06:14 UTC
Show details on NVD website
To clipboard 

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      "product_status:fixed": "75",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "rubygem-actionpack: render file directory traversal in Action View",
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}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.