TI-2022-06025 Aliases CVE-2022-21647 GHSA-w6jr-wj64-mc9x

Deserialization of Untrusted Data in Codeigniter4

HIGH 69CWE-502Published 2022-01-04 · Updated 2025-04-23

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-502.

Summary

CodeIgniter is an open source PHP full-stack web framework. Deserialization of Untrusted Data was found in the `old()` function in CodeIgniter4. Remote attackers may inject auto-loadable arbitrary objects with this vulnerability, and possibly execute existing PHP code on the server. We are aware of a working exploit, which can lead to SQL injection. Users are advised to upgrade to v4.1.6 or later. Users unable to upgrade as advised to not use the `old()` function and form_helper nor `RedirectResponse::withInput()` and `redirect()->withInput()`.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.37671 98th percentileScored 2026-11-07

Fix Fixed CodeIgniter4 (codeigniter4): 4.1.6codeigniter4/framework (Packagist): 4.1.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
codeigniter4	CodeIgniter4	before 4.1.6	4.1.6	Patch available	CNA
—	codeigniter4/framework (Packagist)	before 4.1.6	4.1.6	Patch available	GHSA-w6jr-wj64-mc9x

CodeIgniter4 Vendorcodeigniter4 Affected before 4.1.6 Fixed in 4.1.6 Patch available CNA
codeigniter4/framework (Packagist) Vendor— Affected before 4.1.6 Fixed in 4.1.6 Patch available GHSA-w6jr-wj64-mc9x

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:codeigniter:codeigniter::::::::	4.0.0 to before 4.1.6	Vulnerable	codeigniter4

cpe:2.3:a:codeigniter:codeigniter:*:*:*:*:*:*:*:* Versions 4.0.0 to before 4.1.6 Vulnerable ·codeigniter4

Remediation

Fix · CNA CodeIgniter4 (codeigniter4) Fixed in 4.1.6
Fix · GHSA-w6jr-wj64-mc9x codeigniter4/framework (Packagist) Fixed in 4.1.6 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2022-21647
2026-10-03 Alias added: GHSA-w6jr-wj64-mc9x

References

Patch 1

https://github.com/codeigniter4/CodeIgniter4/commit/ce95ed5765256e2f09f3513e7d42790e0d6948f5

Advisory 2

Other 2

TI-2014-07135 CodeIgniter before 3.0 and Kohana 3.2.3 and earlier and 3.3.x through 3.3.2 make it… CVSS 3.0CRITICAL 9.8
TI-2022-16370 SameSite may allow cross-site request forgery (CSRF) protection to be bypassed CVSS 3.1HIGH 8.8
TI-2024-27591 A Cross-Site Request Forgery (CSRF) in Codeigniter 3.1.13 allows attackers to arbitrarily… CVSS 3.1HIGH 7.5
TI-2014-07136 CodeIgniter before 2.2.0 makes it easier for attackers to decode session cookies by… CVSS 3.0CRITICAL 9.8
TI-2024-19671 CodeIgniter4 Language class DoS Vulnerability CVSS 3.1HIGH 7.5
TI-2022-18660 Secure or HttpOnly flag set in Config\Cookie is not reflected in Cookies issued in Codeigniter4 CVSS 3.1MEDIUM 4.3

See all 39 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences