What’s Vulnerable › Vulnerabilities

CVE-2011-3624

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-11-26 · updated 2026-06-16
• Weakness: CWE-74

Description

Various methods in WEBrick::HTTPRequest in Ruby 1.9.2 and 1.8.7 and earlier do not validate the X-Forwarded-For, X-Forwarded-Host and X-Forwarded-Server headers in requests, which might allow remote attackers to inject arbitrary text into log files or bypass intended address parsing via a crafted header.

Affected products

• Ruby: 1.8.7, 1.9.2

References

• https://access.redhat.com/security/cve/cve-2011-3624
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-3624
• https://redmine.ruby-lang.org/issues/5418
• https://security-tracker.debian.org/tracker/CVE-2011-3624
• https://access.redhat.com/security/cve/cve-2011-3624
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-3624
• https://redmine.ruby-lang.org/issues/5418
• https://security-tracker.debian.org/tracker/CVE-2011-3624

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