File Upload Vulnerability in CodeIgniter Web Framework
CVE-2026-63222

7.5HIGH

Key Information:

Vendor

Codeigniter4

Status
Codeigniter4
Vendor
CVE Published:
31 July 2026

What is CVE-2026-63222?

CodeIgniter, a widely-used PHP framework, is susceptible to a path traversal vulnerability when using the UploadedFile::move() method without the necessary sanitization of filenames. This flaw allows remote attackers to manipulate upload paths, potentially writing files to unintended directories if the application exposes an upload path, leading to severe security concerns. The vulnerability has been addressed in version 4.7.4, which includes appropriate measures to mitigate the risk.

Affected Version(s)

CodeIgniter4 < 4.7.4

References

https://github.com/codeigniter4/CodeIgniter4/security/adv...
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https://github.com/codeigniter4/CodeIgniter4/commit/20ebc...
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https://github.com/codeigniter4/CodeIgniter4/releases/tag...
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.