What’s Vulnerable › Vulnerabilities

CVE-2019-13589

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-07-14 · updated 2026-06-17
• Weakness: CWE-829

Description

The paranoid2 gem 1.1.6 for Ruby, as distributed on RubyGems.org, included a code-execution backdoor inserted by a third party. The current version, without this backdoor, is 1.1.5.

Affected products

• Anjlab Paranoid2: 1.1.6

References

• http://www.securityfocus.com/bid/109281
• https://github.com/rubygems/rubygems.org/issues/2051
• https://rubygems.org/gems/paranoid2/versions
• https://snyk.io/vuln/SNYK-RUBY-PARANOID2-451600
• http://www.securityfocus.com/bid/109281
• https://github.com/rubygems/rubygems.org/issues/2051
• https://rubygems.org/gems/paranoid2/versions
• https://snyk.io/vuln/SNYK-RUBY-PARANOID2-451600

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