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CVE-2026-58409— ChurchCRM: Authenticated Remote Code Execution (RCE) via Malicious Plugin Upload

Quick assessment

Affected
ChurchCRM CRM
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ChurchCRM CRM是ChurchCRM的客户关系管理软件。 ChurchCRM 7.4.0之前版本存在任意文件上传漏洞，该漏洞源于危险扩展名阻止列表（DENIED_EXTENSIONS）无法阻止标准的PHP文件，且已通过身份验证的管理员可通过安装包含PHP webshell的恶意插件ZIP归档文件，实现远程代码执行（RCE）。

CVSS 9.1 · Critical EPSS 0.76% · P54

Affected Version Matrix 1

VendorProduct Version RangeStatus
ChurchCRM CRM < 7.4.0 affected
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I. Basic Information for CVE-2026-58409

Vulnerability Information
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Vulnerability Title
ChurchCRM: Authenticated Remote Code Execution (RCE) via Malicious Plugin Upload
Source: CVE Program / CVE List V5
Vulnerability Description
ChurchCRM is an open-source church management system. Prior to version 7.4.0, an authenticated administrator can achieve Remote Code Execution (RCE) on the server by installing a malicious plugin ZIP archive containing a PHP webshell. The application explicitly includes 'php' in its ALLOWED_EXTENSIONS list, while the dangerous extensions denylist (DENIED_EXTENSIONS) fails to block standard .php files. Because `php` is explicitly included in the allowed extension list for plugin archives, and extracted files are placed directly under the web root, any PHP file inside the ZIP becomes immediately executable via HTTP — without even needing to "enable" the plugin through the application UI. The /plugins/install-url API route (management.php) allows an administrator to source the malicious ZIP from any attacker-controlled HTTPS URL, validating it only against an attacker-supplied SHA-256 hash. This issue has been fixed in version 7.4.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/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
ChurchCRM 任意文件上传漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ChurchCRM CRM是ChurchCRM的客户关系管理软件。 ChurchCRM 7.4.0之前版本存在任意文件上传漏洞，该漏洞源于危险扩展名阻止列表（DENIED_EXTENSIONS）无法阻止标准的PHP文件，且已通过身份验证的管理员可通过安装包含PHP webshell的恶意插件ZIP归档文件，实现远程代码执行（RCE）。
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
ChurchCRM CRM < 7.4.0 -

II. Public POCs for CVE-2026-58409

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6976 chars
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Trigger conditions & impact
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III. Intelligence Information for CVE-2026-58409

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Vendor Advisories for CVE-2026-58409 (1)

Same Patch Batch · ChurchCRM · 2026-07-13 · 4 CVEs total

CVE-2026-58410 7.1 HIGH ChurchCRM: Improper object-level authorization allows low-privileged users to read and mod
CVE-2026-58408 6.5 MEDIUM ChurchCRM : Broken Access Control in `CSVCreateFile.php` Allows Low-Privileged Users to Ex
CVE-2026-58411 ChurchCRM has Reflected Cross-Site Scripting (XSS) via unsanitized request parameter names

IV. Related Vulnerabilities

Same product: CRM
Same vendor: ChurchCRM
Same weakness: CWE-434

V. Comments for CVE-2026-58409

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