CVE-2009-4123

Name: CVE-2009-4123
Creator: NVD / NIST
Published: 2023-12-12T16:15:07.407+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.60%

Last modified Jun 16, 2026

CVE-2009-4123 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The jruby-openssl gem before 0.6 for JRuby mishandles SSL certificate validation.. EPSS estimates a 0.60% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.60%

44.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Jruby	Jruby-Openssl	< 0.6

References

http://jruby.org/2009/12/07/vulnerability-in-jruby-opensslBroken Link
https://github.com/advisories/GHSA-xgv7-pqqh-h2w9Vendor Advisory
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/jruby-openssl/CVE-2009-4123.ymlVendor Advisory
https://web.archive.org/web/20101213091125/http://jruby.org/2009/12/07/vulnerability-in-jruby-opensslVendor Advisory
http://jruby.org/2009/12/07/vulnerability-in-jruby-opensslBroken Link
https://github.com/advisories/GHSA-xgv7-pqqh-h2w9Vendor Advisory
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/jruby-openssl/CVE-2009-4123.ymlVendor Advisory
https://web.archive.org/web/20101213091125/http://jruby.org/2009/12/07/vulnerability-in-jruby-opensslVendor Advisory

Timeline

Published: Dec 12, 2023
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-4123?

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

How severe is CVE-2009-4123?

CVE-2009-4123 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.60% probability of exploitation in the next 30 days.

How do I fix CVE-2009-4123?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-4123?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST