CVE-2019-13589

CRITICALNVD 9.89.8—

9.8

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.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 90.9%
KEV: Not listed

Published

July 14, 2019

Last Modified

November 21, 2024

References (8)

cve@mitrehttp://www.securityfocus.com/bid/109281
cve@mitrehttps://github.com/rubygems/rubygems.org/issues/2051
cve@mitrehttps://rubygems.org/gems/paranoid2/versions
cve@mitrehttps://snyk.io/vuln/SNYK-RUBY-PARANOID2-451600
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/109281
af854a3a-2127-422b-91ae-364da2661108https://github.com/rubygems/rubygems.org/issues/2051
af854a3a-2127-422b-91ae-364da2661108https://rubygems.org/gems/paranoid2/versions
af854a3a-2127-422b-91ae-364da2661108https://snyk.io/vuln/SNYK-RUBY-PARANOID2-451600

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
rubygems	paranoid2	—	ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

RubyGems(1)

Package	Vulnerable range	Fixed in	Dependents
paranoid2	1.1.6	—	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-829Inclusion of Functionality from Untrusted Control Sphere

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 17:24 UTCEG score recompute
2026-05-27 17:24 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 01:13 UTCOSV refresh

Frequently asked(5)

What is CVE-2019-13589?

CVE-2019-13589 is a critical vulnerability published on July 14, 2019. 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.

When was CVE-2019-13589 disclosed?

CVE-2019-13589 was first published in the National Vulnerability Database on July 14, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2019-13589 actively exploited?

CVE-2019-13589 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 90.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-13589?

CVE-2019-13589 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2019-13589?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-13589, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2019-13589

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