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

Vulnerability from cvelistv5 – Published: 2019-03-27 13:38 – Updated: 2025-10-21 23:45
VLAI CISA Previdian
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 · CISA-ADP (v2.0.3)
Decision recorded 2025-07-17 03:55 UTC
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: 50d30900-2b04-41f7-ae14-64e9121cbe0e

Vulnerability ID: CVE-2019-5418

Status: Confirmed

Status Updated: 2025-07-07 02:00 CEST

Exploited: Yes

Timestamps
First Seen: 2025-07-07
Asserted: 2025-07-07
Scope
Notes: 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: 2026-10-02 08:09 CEST | Updated: 2026-10-02 08:09 CEST
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 34eed024-3267-4b45-b2ae-f47f6986cd21

Vulnerability ID: CVE-2019-5418

Status: Confirmed

Status Updated: 2026-06-01 12:36 CEST

Exploited: Yes

Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: 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 | Listed 1 day ahead of CISA KEV | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.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...
Cve Id CVE-2019-5418
Vendor Rails
Ghsa Id GHSA-86G5-2WH3-GC9J
Product https://github.com/rails/rails
Added Date 2026-06-01T10:36:30.850Z
Cvss Score 7.5
Epss Score 0.98507
Previous Ids
Cvss Severity HIGH
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.99919
Used In Malware unknown
Vulnerability Id CVE-2019-5418
Ahead Of Cisa Kev 
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Not Yet In Cisa Kev False
References
Created: 2026-10-02 09:10 CEST | Updated: 2026-10-02 09:10 CEST
Show details on NVD website
To clipboard 

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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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.