Is CVE-2025-24013 actively exploited?

No active exploitation of CVE-2025-24013 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-24013 be exploited remotely?

Yes. CVE-2025-24013 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-24013?

CVE-2025-24013 has a CVSS score of 5.3 (MEDIUM).

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MEDIUM

CVE-2025-24013

CWE-436Published: January 20, 2025· Updated: Jun 17, 2026

5.3

CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2025-24013 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.