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CVE-2026-39591— WordPress WP-BusinessDirectory plugin <= 4.0.0 - Arbitrary File Upload vulnerability

Quick assessment

Affected
CMSJunkie – WordPress Business Directory Plugins WP-BusinessDirectory
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.

WP-BusinessDirectory是加拿大CMSJunkie公司的一款WordPress商业目录插件。 CMSJunkie WP-BusinessDirectory 4.0.0及之前版本存在任意文件上传漏洞，该漏洞源于任意文件上传，可能导致订阅者上传任意文件。

CVSS 9.9 · Critical EPSS 0.48% · P40

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell

Affected Version Matrix 1

VendorProduct Version RangeStatus
CMSJunkie – WordPress Business Directory Plugins WP-BusinessDirectory n/a≤ 4.0.0 affected
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I. Basic Information for CVE-2026-39591

Vulnerability Information
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Vulnerability Title
WordPress WP-BusinessDirectory plugin <= 4.0.0 - Arbitrary File Upload vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Subscriber Arbitrary File Upload in WP-BusinessDirectory <= 4.0.0 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5
Vulnerability Title
CMSJunkie WP-BusinessDirectory 任意文件上传漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WP-BusinessDirectory是加拿大CMSJunkie公司的一款WordPress商业目录插件。 CMSJunkie WP-BusinessDirectory 4.0.0及之前版本存在任意文件上传漏洞，该漏洞源于任意文件上传，可能导致订阅者上传任意文件。
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
CMSJunkie – WordPress Business Directory Plugins WP-BusinessDirectory n/a ~ 4.0.0 -

II. Public POCs for CVE-2026-39591

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III. Intelligence Information for CVE-2026-39591

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IV. Related Vulnerabilities

Same product: WP-BusinessDirectory
Same weakness: CWE-434

V. Comments for CVE-2026-39591

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