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Case File

CVE-2020-5216

MEDIUM · CVSS 4.4 EPSS 1.08% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-01-23 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.4. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2020-5216
Severity
MEDIUM
CVSS
4.4
EPSS
1.08%

Original NVD Description

In Secure Headers (RubyGem secure_headers), a directive injection vulnerability is present in versions before 3.9.0, 5.2.0, and 6.3.0. If user-supplied input was passed into append/override_content_security_policy_directives, a newline could be injected leading to limited header injection. Upon seeing a newline in the header, rails will silently create a new Content-Security-Policy header with the remaining value of the original string. It will continue to create new headers for each newline. This has been fixed in 6.3.0, 5.2.0, and 3.9.0.

Related CVEs

Other vulnerabilities affecting the same vendor(s)