CVE-2019-18409: Zenspider Ruby Parser-Legacy

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Zenspider Ruby Parser-Legacy: version 1.0.0 only

Published 2019-10-24. Last modified 2026-06-17.