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CVE-2019-5418

Rails Ruby on Rails Path Traversal Vulnerability

  • High 7.5
  • Exploited: added to CISA KEV 7 Jul 2025
  • A public exploit reference is listed

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.

Key facts

Published
27 Mar 2019
Last changed
21 Oct 2025
Assigned by
hackerone
KEV added
7 Jul 2025
KEV fix due
28 Jul 2025
EPSS
98.507% likely to be exploited in the next 30 days, higher than 99.921% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: yes; Technical impact: partial

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 7.5CVSS 3.1, Highfrom CISA (ADP container)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

What to do

  • Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
Railshttps://github.com/rails/rails
  • 5.2.2.1 (affected)
  • 5.1.6.2 (affected)
  • 5.0.7.2 (affected)
  • 4.2.11.1 (affected)

Timeline

  1. 27 Mar 2019 Published
  2. 7 Jul 2025 CVE-2019-5418 added to CISA KEV
  3. 7 Jul 2025 Added to the CISA KEV catalogue

Weakness

Practice this bug class

HackZoneLabs has a hands-on lab on Path traversal (CWE-22).

Open the learning platform

References