CVE-2025-24013

Name: CVE-2025-24013
Creator: NVD / NIST
Published: 2025-01-20T16:15:28.877+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.48%

Last modified Jun 17, 2026

CVE-2025-24013 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. CodeIgniter is a PHP full-stack web framework. Prior to 4.5.8, CodeIgniter lacked proper header validation for its name and value. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.48%

37.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-436

Affected Software

Vendor	Product	Versions
Codeigniter	Codeigniter	< 4.5.8

References

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

Timeline

Published: Jan 20, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-24013?

How severe is CVE-2025-24013?

CVE-2025-24013 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.

How do I fix CVE-2025-24013?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-24013?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST