🔴 严重 | CVE-2026-48062 — CodeIgniter is a PHP full-stack web framework. Pri...
🔴 《严重安全漏洞：CVE-2026-48062》
CVSS 评分: 严重（9.8） 状态: Received 发布时间: 2026-07-17
漏洞描述
CodeIgniter is a PHP full-stack web framework. Prior to 4.7.3, the ext_in upload validation rule in system/Validation/StrictRules/FileRules.php checked the MIME-derived guessed extension instead of the client-provided filename extension. As a result, an uploaded file named shell.php containing GIF-like content could pass validation such as uploaded[avatar]|is_image[avatar]|mime_in[avatar,image/gif]|ext_in[avatar,gif] because the detected MIME type maps to gif, even though the uploaded filename extension is php. Applications are impacted if they accept user-controlled uploads, rely on ext_in to validate the uploaded filename extension, save uploaded files using the original client filename with $file->move($path), store uploads in a web-accessible directory, and allow PHP or other executable files to run from that directory. In those conditions, this may lead to arbitrary code execution. This issue is fixed in version 4.7.3.
🔍 技术细节
| 字段 | 值 |
|---|---|
| CVE ID | CVE-2026-48062 |
| CVSS 评分 | 9.8 🔴 |
| 严重程度 | 严重 |
| CVSS 向量 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CWE 分类 | CWE-434 |
| 发布时间 | 2026-07-17 |
| 最后更新 | 2026-07-17 |
| 状态 | Received |
| 数据来源 | security-advisories@github.com |