CVE-2022-23556: Insufficient Verification of Data Authenticity

December 22, 2022 (updated November 9, 2023)

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().

References

github.com/codeigniter4/CodeIgniter4/commit/5ca8c99b2db09a2a08a013836628028ddc984659
github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-ghw3-5qvm-3mqc
nvd.nist.gov/vuln/detail/CVE-2022-23556

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