CVE-2019-5418: Rails Ruby on Rails Path Traversal Vulnerability
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.
| Vendor | Rails |
|---|---|
| Product | Ruby on Rails |
| Date added to KEV | 2025-07-07 |
| Due date (BOD 22-01) | 2025-07-28 |
| Known ransomware campaign use | Unknown |
| CWE | CWE-22 |
| 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. |
What to do
- Identify every instance of Rails Ruby on Rails in your environment (asset inventory, EDR, vulnerability scanner).
- Apply 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.
- Federal civilian agencies must act by 2025-07-28 under BOD 22-01; other organizations can use the same date as a target.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
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