CVE-2026-5337— Frontend File Manager Plugin <= 23.6 - Subscriber+ Arbitrary Download Access via IDOR
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I. Basic Information for CVE-2026-5337
Vulnerability Information
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Vulnerability Title
Frontend File Manager Plugin <= 23.6 - Subscriber+ Arbitrary Download Access via IDOR
Source: NVD (National Vulnerability Database)
Vulnerability Description
During the analysis, it was identified that authenticated attackers with Subscriber-level access or higher are able to perform an Insecure Direct Object Reference (IDOR) attack. This vulnerability exists because the Frontend File Manager Plugin WordPress plugin through 23.6 does not properly validate user authorization for the requested uploaded file when processing download requests. By modifying the value of the 'file_id' parameter in the download endpoint (e.g., http://localhost/?do=wpfm_download&file_id=40&nm_file_nonce=a36fb893f1), an attacker can access files belonging to other users, including privileged users such as administrators. This allows unauthorized access/read to sensitive data stored within the application.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin Frontend File Manager Plugin 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Frontend File Manager Plugin 23.6及之前版本存在安全漏洞，该漏洞源于对用户授权验证不足，可能导致具有订阅者及以上权限的认证攻击者通过修改file_id参数进行不安全的直接对象引用攻击，
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Unknown | Frontend File Manager Plugin | 0 ~ 23.6 | - |
II. Public POCs for CVE-2026-5337
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|---|
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- Frontend File Manager Plugin <= 23.6 – Subscriber+ Arbitrary Download Access via IDOR | CVE 2026-5337 | Plugin Vulnerabilitiesexploitvdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-5337
IV. Related Vulnerabilities
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Frontend File Manager < 23.5 - Subscriber+ Arbitrary File De - CVE-2025-13382
Frontend File Manager Plugin <= 23.4 - Insecure Direct Objec - CVE-2023-7306
Frontend File Manager <= 21.5 - Missing Authorization to Una
Same vendor: Unknown
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V. Comments for CVE-2026-5337
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