VULNERABILITY INTELLIGENCE

CVE-2011-3624

CVSS score5.3 MEDIUM
EPSS probability1.52%
CISA KEVNot currently listed
Published2019-11-26
Last modified2026-06-16
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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.

Weakness classification

  • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Primary references