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CVE-2026-5337— Frontend File Manager Plugin <= 23.6 - Subscriber+ Arbitrary Download Access via IDOR

Quick assessment

Affected
Unknown Frontend File Manager Plugin
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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，

AI Predicted 6.5 Difficulty: Easy EPSS 0.34% · P25

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Frontend File Manager Plugin ≤ 23.6 affected
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
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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III. Intelligence Information for CVE-2026-5337

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Vendor Advisories for CVE-2026-5337 (1)

IV. Related Vulnerabilities

Same product: Frontend File Manager Plugin
Same vendor: Unknown

V. Comments for CVE-2026-5337

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