CVE-2009-4123: Jruby Jruby-OpenSSL

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

The jruby-openssl gem before 0.6 for JRuby mishandles SSL certificate validation.

Affected products

• Jruby Jruby-OpenSSL: before 0.6 (fixed in 0.6)

Published 2023-12-12. Last modified 2026-06-16.