VULNERABILITY INTELLIGENCE
CVE-2009-3287
CVSS score7.5 HIGH
EPSS probability1.38%
CISA KEVNot currently listed
Published2009-09-22
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:P/I:P/A:P
Description
lib/thin/connection.rb in Thin web server before 1.2.4 relies on the X-Forwarded-For header to determine the IP address of the client, which allows remote attackers to spoof the IP address and hide activities via a modified X-Forwarded-For header.
Weakness classification
- CWE-20: Improper Input Validation