CVE-2026-63223-POC

CVE-2026-63223 PoC — CodeIgniter 4 文件上传 RCE CVSS 9.8（严重） | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CWE-434 ：危险类型文件的不受限制上传 修复版本 ：CodeIgniter 4 v4.7.4 安全公告 ：GHSA-mmj4-63m4-r6h5 漏洞摘要 CodeIgniter 4 的 isimage 和 mimein 文件上传验证规则仅检查基于内容派生的 MIME 类型 （魔数），而不检查 客户端提供的文件扩展名。 未认证的攻击者可以在 PHP webshell...

Arbitrary File Upload

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 isimage or mimein upload validation rules. An attacker can execute arbitrary code by uploading a file with...

CVE-2026-63223 CodeIgniter: Uploaded file extension validation bypass in is_image and mime_in rules

CodeIgniter is a PHP full-stack web framework. Prior to 4.7.4, the isimage and mimein upload validation rules do not independently enforce a safe client filename extension, allowing a remote attacker to upload executable content when an application preserves the client filename and stores uploads...

CVE-2026-63223: Unrestricted Upload of File with Dangerous Type

CodeIgniter is a PHP full-stack web framework. Prior to 4.7.4, the isimage and mimein upload validation rules do not independently enforce a safe client filename extension, allowing a remote attacker to upload executable content when an application preserves the client filename and stores uploads...