CVE-2022-23556 HIGH

CVE-2022-23556: CodeIgniter is vulnerable to IP address spoofing when using proxy

Vendor Codeigniter4

Product CodeIgniter4

Weakness CWE-345

Published December 22, 2022

Last update April 15, 2025

View on NVD All CVEs

CVSS base score

7.0/10

Attack vector Network

Attack complexity High

Privileges required None

User interaction None

Confidentiality High

Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

What the vulnerability does

Description

CodeIgniter is a PHP full-stack web framework. This vulnerability may allow attackers to spoof their IP address when the server is behind a reverse proxy. This issue has been patched, please upgrade to version 4.2.11 or later, and configure `Config\App::$proxyIPs`. As a workaround, do not use `$request->getIPAddress()`.

Key dates

Disclosure timeline

December 22, 2022 CVE published

April 15, 2025 Record updated