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TI-2019-13400 Aliases CVE-2019-18409GHSA-hhwc-8g49-j8jx

The ruby_parser-legacy (aka legacy) gem 1.0.0 for Ruby allows local privilege escalation…

Priority LOW 34CWE-732Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.

Summary

The ruby_parser-legacy (aka legacy) gem 1.0.0 for Ruby allows local privilege escalation because of world-writable files. For example, if the brakeman gem (which has a legacy dependency) 4.5.0 through 4.7.0 is used, a local user can insert malicious code into the ruby_parser-legacy-1.0.0/lib/ruby_parser/legacy/ruby_parser.rb file.

Why it matters now

EPSS 0.00332 26th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—ruby_parser-legacy (RubyGems)up to 1.0.0—No fix listedGHSA-hhwc-8g49-j8jx
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • ruby_parser-legacy (RubyGems) Vendor— Affected up to 1.0.0 Fixed in — No fix listed GHSA-hhwc-8g49-j8jx

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:zenspider:ruby_parser-legacy:1.0.0:*:*:*:*:ruby:*:*1.0.0VulnerableZenspider
  • cpe:2.3:a:zenspider:ruby_parser-legacy:1.0.0:*:*:*:*:ruby:*:* Versions 1.0.0 Vulnerable ·Zenspider

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-18409
  2. 2026-10-03 Alias added: GHSA-hhwc-8g49-j8jx

References

Exploit 1

Advisory 1

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences