CVE-2019-5418: Rails Ruby on Rails Path Traversal Vulnerability

Required action (CISA's text)

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

Description (NVD)

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.

SOURCES

• CISA KEVCISA Known Exploited Vulnerabilities catalog

Other Rails flaws

• CVE-2016-0752: Ruby on Rails Directory Traversal Vulnerability
• CVE-2014-0130: Ruby on Rails Directory Traversal Vulnerability

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.