Arbitrary File Upload Affecting codeigniter4/framework package, versions <4.7.4
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PHP-CODEIGNITER4FRAMEWORK-18506886
- published2 Aug 2026
- disclosed31 Jul 2026
- creditUnknown
Introduced: 31 Jul 2026
NewCVE-2026-63223 (opens in a new tab)How to fix?
Upgrade codeigniter4/framework to version 4.7.4 or higher.
Overview
codeigniter4/framework is a PHP full-stack web framework that is light, fast, flexible, and secure.
Affected versions of this package are vulnerable to Arbitrary File Upload via the is_image or mime_in upload validation rules. An attacker can execute arbitrary code by uploading a file with a malicious extension when the application saves uploads using the client-supplied filename and stores them in a web-accessible directory where script execution is enabled. This is only exploitable if uploads are validated solely with is_image or mime_in, saved with the original client filename, and placed in a directory where executable files can run.