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CVE-2026-27423— WordPress Participants Database plugin <= 2.7.8.4 - Broken Access Control vulnerability

Quick assessment

Affected
Roland Barker Participants Database
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 Participants Database是WordPress基金会开源的一个参与者数据库管理插件。 WordPress Participants Database 2.7.8.4及之前版本存在授权问题漏洞，该漏洞源于访问控制不当，可能导致订阅者权限被绕过。

CVSS 4.3 · Medium EPSS 0.25% · P17

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Roland Barker Participants Database n/a≤ 2.7.8.4 affected
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I. Basic Information for CVE-2026-27423

Vulnerability Information
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Vulnerability Title
WordPress Participants Database plugin <= 2.7.8.4 - Broken Access Control vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Subscriber Broken Access Control in Participants Database <= 2.7.8.4 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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 Participants Database 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Participants Database是WordPress基金会开源的一个参与者数据库管理插件。 WordPress Participants Database 2.7.8.4及之前版本存在授权问题漏洞，该漏洞源于访问控制不当，可能导致订阅者权限被绕过。
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
Roland Barker Participants Database n/a ~ 2.7.8.4 -

II. Public POCs for CVE-2026-27423

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III. Intelligence Information for CVE-2026-27423

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Same Patch Batch · Roland Barker · 2026-07-23 · 3 CVEs total

CVE-2026-59555 10.0 CRITICAL WordPress Participants Database plugin <= 2.7.8.3 - Arbitrary File Deletion vulnerability
CVE-2026-59525 9.3 CRITICAL WordPress Participants Database plugin <= 2.7.8.3 - SQL Injection vulnerability

IV. Related Vulnerabilities

Same product: Participants Database
Same vendor: Roland Barker
Same weakness: CWE-862

V. Comments for CVE-2026-27423

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