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CVE-2026-28189— WordPress Participants Database plugin <= 2.7.8.4 - Arbitrary File Deletion 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及之前版本存在路径遍历漏洞，该漏洞源于对文件删除操作验证不足，可能导致未经身份验证的攻击者删除任意文件。

CVSS 7.4 · High EPSS 0.43% · P35

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-2026-28189

Vulnerability Information
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Vulnerability Title
WordPress Participants Database plugin <= 2.7.8.4 - Arbitrary File Deletion vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated Arbitrary File Deletion in Participants Database <= 2.7.8.4 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/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 Participants Database 路径遍历漏洞
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及之前版本存在路径遍历漏洞，该漏洞源于对文件删除操作验证不足，可能导致未经身份验证的攻击者删除任意文件。
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-2026-28189

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III. Intelligence Information for CVE-2026-28189

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IV. Related Vulnerabilities

Same product: Participants Database
Same vendor: Roland Barker
Same weakness: CWE-22

V. Comments for CVE-2026-28189

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