What’s Vulnerable › Vulnerabilities

CVE-2014-6438

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-09-06 · updated 2026-06-17
• Weakness: CWE-399

Description

The URI.decode_www_form_component method in Ruby before 1.9.2-p330 allows remote attackers to cause a denial of service (catastrophic regular expression backtracking, resource consumption, or application crash) via a crafted string.

Affected products

• Ruby: through 1.9.2

References

• http://www.openwall.com/lists/oss-security/2015/07/13/6
• http://www.securitytracker.com/id/1032874
• https://github.com/ruby/www.ruby-lang.org/issues/817
• https://www.ruby-lang.org/en/news/2014/08/19/ruby-1-9-2-p330-released/
• http://www.openwall.com/lists/oss-security/2015/07/13/6
• http://www.securitytracker.com/id/1032874
• https://github.com/ruby/www.ruby-lang.org/issues/817
• https://www.ruby-lang.org/en/news/2014/08/19/ruby-1-9-2-p330-released/

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