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CVE-2026-4609— ProfileGrid <= 5.9.8.4 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Group Joining

Quick assessment

Affected
metagauss ProfileGrid – User Profiles, Groups and Communities
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 ProfileGrid 5.9.8.4及之前版本存在安全漏洞，该漏洞源于对pm_invite_user函数缺少权限检查，可能导致经过身份验证的攻击者将自己或任何注册用户添加到任何ProfileGrid组。

CVSS 7.1 · High EPSS 0.38% · P29

Possible ATT&CK Techniques 1 AI

T1078.004 · Cloud Accounts

Affected Version Matrix 1

VendorProduct Version RangeStatus
metagauss ProfileGrid – User Profiles, Groups and Communities ≤ 5.9.8.4 affected
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I. Basic Information for CVE-2026-4609

Vulnerability Information
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Vulnerability Title
ProfileGrid <= 5.9.8.4 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Group Joining
Source: CVE Program / CVE List V5
Vulnerability Description
The ProfileGrid – User Profiles, Groups and Communities plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the pm_invite_user function in all versions up to, and including, 5.9.8.4. This makes it possible for authenticated attackers, with Subscriber-level access and above, to add themselves or any registered user to any ProfileGrid group, including closed and paid groups, bypassing all authorization and payment gates.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin ProfileGrid 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 ProfileGrid 5.9.8.4及之前版本存在安全漏洞，该漏洞源于对pm_invite_user函数缺少权限检查，可能导致经过身份验证的攻击者将自己或任何注册用户添加到任何ProfileGrid组。
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
metagauss ProfileGrid – User Profiles, Groups and Communities 0 ~ 5.9.8.4 -

II. Public POCs for CVE-2026-4609

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III. Intelligence Information for CVE-2026-4609

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Patches & Fixes for CVE-2026-4609 (1)

Vendor Advisories for CVE-2026-4609 (1)

Same Patch Batch · metagauss · 2026-05-13 · 3 CVEs total

CVE-2026-4608 6.5 MEDIUM ProfileGrid <= 5.9.8.4 - Authenticated (Subscriber+) SQL Injection via 'rid' Parameter
CVE-2026-4607 4.3 MEDIUM ProfileGrid <= 5.9.8.4 - Missing Authorization to Authenticated (Subscriber+) Group Settin

IV. Related Vulnerabilities

Same product: ProfileGrid – User Profiles, Groups and Communities
Same vendor: metagauss
Same weakness: CWE-862

V. Comments for CVE-2026-4609

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