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🛡️ CVE-2025-24013 — codeigniter

🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-436 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Missing validation of header name and value in codeigniter4/framework

Impact

Lack of 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.

Patches

Upgrade to v4.5.8 or later.

Workarounds

Validate HTTP header keys and/or values if using user-supplied values before passing them to Header class.

Differences from CVE-2023-29197

1. Affected Software:

  • CVE-2023-29197 specifically addresses a vulnerability in the guzzlehttp/psr7 library.
  • The reported issue in this Security Advisory is within the CodeIgniter4 framework and does not depend on or use the guzzlehttp/psr7 library.

2. Root Cause and Implementation:

  • The vulnerability reported arises from an issue in the Header class of CodeIgniter4, which is unrelated to the functionality or implementation of guzzlehttp/psr7.

3. Scope of Impact:

  • The vulnerability described in this Security Advisory affects applications built with the CodeIgniter4 framework, which does not use or rely on the guzzlehttp/psr7 library.

References

  • https://datatracker.ietf.org/doc/html/rfc7230#section-3.2
  • https://github.com/advisories/GHSA-wxmh-65f7-jcvw

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity low, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: Low — limited, and the attacker does not choose what is affected.
  • Availability impact: None.

Weakness class

CVE-2025-24013 is classified as CWE-436: Interpretation Conflict. Two components parse the same data differently, so a check in one is bypassed in the other.

Affected software

CVE-2025-24013 is recorded against 2 packages.

  • codeigniter (fixed in 4.5.8)
  • codeigniter4/framework (fixed in 4.5.8)

Timeline and source

Published on 20 January 2025 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

datatracker.ietf.org
github.com
github.com
github.com

Other advisories for this package

codeigniter has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-436: Interpretation Conflict) in other software:

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE CWE-436
Public Exploit ✅ No
Source NVD
Published 2025-01-20
Updated 2026-08-20
Modified 2026-06-17

Affected Packages

Software From version Fixed in
codeigniter — 4.5.8
codeigniter4/framework — 4.5.8

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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