5.3
MEDIUM CVSS 3.1
CVE-2025-24013
CodeIgniter Header Validation Bypass Vulnerability (Remote Denial of Service / Error)
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.

INFO

Published Date :

Jan. 20, 2025, 4:15 p.m.

Last Modified :

Aug. 1, 2025, 7:17 p.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2025-24013 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Codeigniter codeigniter
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-24013.

URL Resource
https://datatracker.ietf.org/doc/html/rfc7230#section-3.2 Technical Description
https://github.com/advisories/GHSA-wxmh-65f7-jcvw Not Applicable
https://github.com/codeigniter4/CodeIgniter4/commit/5f8aa24280fb09947897d6b322bf1f0e038b13b6 Patch
https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-x5mq-jjr3-vmx6 Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-24013 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-24013 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-24013 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-24013 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Aug. 01, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:codeigniter:codeigniter:*:*:*:*:*:*:*:* versions up to (excluding) 4.5.8
    Added Reference Type GitHub, Inc.: https://datatracker.ietf.org/doc/html/rfc7230#section-3.2 Types: Technical Description
    Added Reference Type GitHub, Inc.: https://github.com/advisories/GHSA-wxmh-65f7-jcvw Types: Not Applicable
    Added Reference Type GitHub, Inc.: https://github.com/codeigniter4/CodeIgniter4/commit/5f8aa24280fb09947897d6b322bf1f0e038b13b6 Types: Patch
    Added Reference Type GitHub, Inc.: https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-x5mq-jjr3-vmx6 Types: Vendor Advisory
  • New CVE Received by [email protected]

    Jan. 20, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
    Added CWE CWE-436
    Added Reference https://datatracker.ietf.org/doc/html/rfc7230#section-3.2
    Added Reference https://github.com/advisories/GHSA-wxmh-65f7-jcvw
    Added Reference https://github.com/codeigniter4/CodeIgniter4/commit/5f8aa24280fb09947897d6b322bf1f0e038b13b6
    Added Reference https://github.com/codeigniter4/CodeIgniter4/security/advisories/GHSA-x5mq-jjr3-vmx6
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 5.3
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact