CVE-2025-24013

CodeIgniter is a PHP full-stack web framework. Prior to 4.5.8, CodeIgniter lacked proper header validation for its name and value. The potential attacker can construct deliberately malformed headers with Header class. This could disrupt application functionality, potentially causing errors or generating invalid HTTP requests. In some cases, these malformed requests might lead to a DoS scenario if a remote service’s web application firewall interprets them as malicious and blocks further communication with the application. This vulnerability is fixed in 4.5.8.

• CWE-436

• https://datatracker.ietf.org/doc/html/rfc7230#section-3.2Technical Description
• https://github.com/advisories/GHSA-wxmh-65f7-jcvwNot Applicable
• https://github.com/codeigniter4/CodeIgniter4/commit/5f8aa24280fb09947897d6b322bf1f0e038b13b6Patch
• https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-x5mq-jjr3-vmx6Vendor Advisory

Published

Jan 20, 2025

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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