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CVE-2026-6248— wpForo Forum <= 3.0.5 - Authenticated (Subscriber+) Arbitrary File Deletion via Custom Profile Field File Path

Quick assessment

Affected
tomdever wpForo Forum
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 wpForo Forum 3.0.5及之前版本存在安全漏洞，该漏洞源于对文件类型自定义字段的值验证和限制不足，可能导致经过身份验证的攻击者删除任意文件，进而引发远程代码执行。

CVSS 8.1 · High EPSS 0.95% · P60
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I. Basic Information for CVE-2026-6248

Vulnerability Information
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Vulnerability Title
wpForo Forum <= 3.0.5 - Authenticated (Subscriber+) Arbitrary File Deletion via Custom Profile Field File Path
Source: CVE Program / CVE List V5
Vulnerability Description
The wpForo Forum plugin for WordPress is vulnerable to Arbitrary File Deletion in versions up to and including 3.0.5. This is due to two compounding flaws: the Members::update() method does not validate or restrict the value of file-type custom profile fields, allowing authenticated users to store an arbitrary path instead of a legitimate upload path; and the wpforo_fix_upload_dir() sanitization function in ucf_file_delete() only remaps paths that match the expected pattern, and it is passed directly to the unlink() function. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). Note: The vulnerability requires a file custom field, which requires the wpForo - User Custom Fields addon plugin.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin wpForo Forum 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 wpForo Forum 3.0.5及之前版本存在安全漏洞，该漏洞源于对文件类型自定义字段的值验证和限制不足，可能导致经过身份验证的攻击者删除任意文件，进而引发远程代码执行。
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
tomdever wpForo Forum 0 ~ 3.0.5 -

II. Public POCs for CVE-2026-6248

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III. Intelligence Information for CVE-2026-6248

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Vendor Advisories for CVE-2026-6248 (1)

IV. Related Vulnerabilities

Same product: wpForo Forum
Same vendor: tomdever
Same weakness: CWE-22

V. Comments for CVE-2026-6248

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