CVE-2026-53952— GetSimple CMS & GetSimpleCMS-CE have an Unauthenticated Admin Account Creation via Setup Logic Flaw
Quick assessment
Affected
GetSimpleCMS-CE GetSimpleCMS-CE
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.
GetSimple CMS 是一种内容管理系统（CMS），而 GetSimple CMS CE 是该 CMS 的社区版。GetSimple CMS（v3.4.0a 及以下版本）和 GetSimpleCMS-CE（v3.3.22 及以下版本）中存在一个逻辑缺陷，使得未经身份验证的攻击者能够创建新的管理员账户。 该应用程序具备一项自动化安全控制机制，旨在在安装完成后删除敏感文件 。然而，删除逻辑中存在的“自我排除”缺陷使这一控制机制失效，导致安装完成后，安装脚本仍然可以访问，从而允许非授权的用户创建账户。 截至本公告发
Affected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| GetSimpleCMS | GetSimpleCMS | <= 3.4.0a |
affected |
| GetSimpleCMS-CE | GetSimpleCMS-CE | <= 3.3.22 |
affected |
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I. Basic Information for CVE-2026-53952
Vulnerability Information
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Vulnerability Title
GetSimple CMS & GetSimpleCMS-CE have an Unauthenticated Admin Account Creation via Setup Logic Flaw
Source: CVE Program / CVE List V5
Vulnerability Description
GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. A logic flaw in GetSimple CMS (v3.4.0a and below) and GetSimpleCMS-CE (v3.3.22 and below) allows unauthenticated attackers to create a new administrator account. The application features an automated security control designed to delete the sensitive `admin/setup.php` file post-installation. However, this control is neutralized by a self-exclusion bug within the deletion logic, leaving the setup script accessible for unauthorized account creation even after a legitimate installation is completed. As of time of publication, no known patched versions are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| GetSimpleCMS-CE | GetSimpleCMS-CE | <= 3.3.22 | - |
|
| GetSimpleCMS | GetSimpleCMS | <= 3.4.0a | - |
|
II. Public POCs for CVE-2026-53952
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-53952 (1)
IV. Related Vulnerabilities
Same product: GetSimpleCMS-CE
-
CVE-2026-28495
GetSimple CMS has CSRF to Remote Code Execution via Arbitrar -
CVE-2026-26351
GetSimpleCMS-CE < 3.3.22 Stored XSS via components.php -
CVE-2026-27202
GetSimple CMS: Uploaded Files (feature) Arbitrary File Read -
CVE-2026-27161
Unauthenticated Information Disclosure via .htaccess Relianc -
CVE-2026-27147
GetSimple CMS: Stored Cross-Site Scripting (XSS) via SVG Fil
Same vendor: GetSimpleCMS-CE
-
CVE-2026-28495
GetSimple CMS has CSRF to Remote Code Execution via Arbitrar -
CVE-2026-26351
GetSimpleCMS-CE < 3.3.22 Stored XSS via components.php -
CVE-2026-27202
GetSimple CMS: Uploaded Files (feature) Arbitrary File Read -
CVE-2026-27161
Unauthenticated Information Disclosure via .htaccess Relianc -
CVE-2026-27147
GetSimple CMS: Stored Cross-Site Scripting (XSS) via SVG Fil
Same weakness: CWE-285
-
CVE-2026-80378
DataStage on Cloud Pak for Data has several vulnerabilities -
CVE-2026-80436
DataStage on Cloud Pak for Data has several vulnerabilities -
CVE-2026-86804
seakee CPA-Manager-Plus HTTP handler.go CPAResource improper -
CVE-2026-58611
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Open5GS AMF/MME improper authorization
V. Comments for CVE-2026-53952
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