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CVE-2026-27147— GetSimple CMS: Stored Cross-Site Scripting (XSS) via SVG File Upload (Authenticated)

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GetSimple CMS开源的一个内容管理系统。 GetSimple CMS存在跨站脚本漏洞，该漏洞源于SVG文件上传未正确清理或限制，可能导致跨站脚本攻击。

AI Predicted 6.1 Difficulty: Easy EPSS 0.23% · P13
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I. Basic Information for CVE-2026-27147

Vulnerability Information
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Vulnerability Title
GetSimple CMS: Stored Cross-Site Scripting (XSS) via SVG File Upload (Authenticated)
Source: CVE Program / CVE List V5
Vulnerability Description
GetSimple CMS is a content management system. All versions of GetSimple CMS are vulnerable to XSS through SVG file uploads. Authenticated users can upload SVG files via the administrative upload functionality, but they are not properly sanitized or restricted, allowing an attacker to embed malicious JavaScript. When the uploaded SVG file is accessed, the script executes in the browser. This issue does not have a fix at the time of publication.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
GetSimple CMS 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GetSimple CMS是GetSimple CMS开源的一个内容管理系统。 GetSimple CMS存在跨站脚本漏洞，该漏洞源于SVG文件上传未正确清理或限制，可能导致跨站脚本攻击。
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
GetSimpleCMS-CE GetSimpleCMS-CE <= 3.3.22 -

II. Public POCs for CVE-2026-27147

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III. Intelligence Information for CVE-2026-27147

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Vendor Advisories for CVE-2026-27147 (1)

Same Patch Batch · GetSimpleCMS-CE · 2026-02-20 · 4 CVEs total

CVE-2026-27161 Unauthenticated Information Disclosure via .htaccess Reliance in Sensitive Directories
CVE-2026-27146 GetSimple CMS: Cross-Site Request Forgery (CSRF) in File Upload Allows Arbitrary Uploads
CVE-2026-27202 GetSimple CMS: Uploaded Files (feature) Arbitrary File Read Vulnerability

IV. Related Vulnerabilities

Same product: GetSimpleCMS-CE
Same vendor: GetSimpleCMS-CE
Same weakness: CWE-79