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Vulnerability record · CVE-2009-5147 · published 29 March 2017

CVE-2009-5147: Ruby-lang ruby improper input validation vulnerability

Ruby Lang · Ruby

DL::dlopen in Ruby 1.8, 1.9.0, 1.9.2, 1.9.3, 2.0.0 before patchlevel 648, and 2.1 before 2.1.8 opens libraries with tainted names.

7.3 CVSS 3.0 High EPSS 7.8% · top 5.6% CWE-20 · Improper input validation
7.3CVSS 3.0 base score, v2 7.5
7.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References
16 Jun 2026Last modified by NVD

Description

DL::dlopen in Ruby 1.8, 1.9.0, 1.9.2, 1.9.3, 2.0.0 before patchlevel 648, and 2.1 before 2.1.8 opens libraries with tainted names.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://seclists.org/oss-sec/2015/q3/222 PatchThird Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/76060 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:0583
https://bugzilla.redhat.com/show_bug.cgi?id=1248935 Issue TrackingPatchThird Party AdvisoryVDB Entry
https://github.com/ruby/ruby/commit/4600cf725a86ce31266153647ae5aa1197b1215b PatchThird Party Advisory
https://www.ruby-lang.org/en/news/2015/12/16/unsafe-tainted-string-usage-in-fiddle-and-dl-cve-2015-7551/ Vendor Advisory
http://seclists.org/oss-sec/2015/q3/222 PatchThird Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/76060 Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHSA-2018:0583
https://bugzilla.redhat.com/show_bug.cgi?id=1248935 Issue TrackingPatchThird Party AdvisoryVDB Entry
https://github.com/ruby/ruby/commit/4600cf725a86ce31266153647ae5aa1197b1215b PatchThird Party Advisory
https://www.ruby-lang.org/en/news/2015/12/16/unsafe-tainted-string-usage-in-fiddle-and-dl-cve-2015-7551/ Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2009-5147), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.