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CVE-2026-12426— Members <= 3.2.22 - Unauthenticated Sensitive Information Disclosure via REST API Pagination Side Channel

Quick assessment

Affected
supercleanse Members – Membership & User Role Editor 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 Members是WordPress基金会的一个内容管理系统组件。 WordPress Members 3.2.22及之前版本存在信息泄露漏洞，该漏洞源于通过members_filter_protected_posts_for_rest函数暴露敏感信息，可能导致未经验证的攻击者提取存在访问限制的文章的确切数量，并利用分页推断隐藏文章中的关键词和内容。

CVSS 5.3 · Medium EPSS 0.27% · P20

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
supercleanse Members – Membership & User Role Editor Plugin ≤ 3.2.22 affected
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I. Basic Information for CVE-2026-12426

Vulnerability Information
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Vulnerability Title
Members <= 3.2.22 - Unauthenticated Sensitive Information Disclosure via REST API Pagination Side Channel
Source: CVE Program / CVE List V5
Vulnerability Description
The Members – Membership & User Role Editor Plugin plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.2.22 via the members_filter_protected_posts_for_rest. This makes it possible for unauthenticated attackers to extract determine the existence and exact count of access-restricted posts, and use per-page pagination as a boolean oracle to infer keywords and content contained within those hidden restricted posts.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Members 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Members是WordPress基金会的一个内容管理系统组件。 WordPress Members 3.2.22及之前版本存在信息泄露漏洞，该漏洞源于通过members_filter_protected_posts_for_rest函数暴露敏感信息，可能导致未经验证的攻击者提取存在访问限制的文章的确切数量，并利用分页推断隐藏文章中的关键词和内容。
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
supercleanse Members – Membership & User Role Editor Plugin 0 ~ 3.2.22 -

II. Public POCs for CVE-2026-12426

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III. Intelligence Information for CVE-2026-12426

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Patches & Fixes for CVE-2026-12426 (4)

Vendor Advisories for CVE-2026-12426 (1)

IV. Related Vulnerabilities

Same product: Members – Membership & User Role Editor Plugin
Same vendor: supercleanse
Same weakness: CWE-200

V. Comments for CVE-2026-12426

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