CVE-2026-54720— Silverstripe Framework: Possible XSS attack through media embed
Quick assessment
Affected
silverstripe silverstripe-framework
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.
SilverStripe framework是SilverStripe公司开源的一套Web应用程序开发框架。 Silverstripe CMS Silverstripe Framework 6.2.2之前版本存在跨站脚本漏洞，该漏洞源于“Insert media from web”功能对特制嵌入内容处理不当，容易受到跨站脚本攻击。
Possible ATT&CK Techniques 1 AI
T1059.007 · JavaScriptAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| silverstripe | silverstripe-framework | < 6.2.2 |
affected |
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I. Basic Information for CVE-2026-54720
Vulnerability Information
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Vulnerability Title
Silverstripe Framework: Possible XSS attack through media embed
Source: CVE Program / CVE List V5
Vulnerability Description
Silverstripe Framework is a PHP framework which powers the Silverstripe CMS. In versions prior to 6.2.2, the "Insert media from web" functionality in the CMS is vulnerable to XSS from a specially crafted embed. This issue was fixed in version 6.2.2/
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A: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
Silverstripe CMS Silverstripe Framework 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SilverStripe framework是SilverStripe公司开源的一套Web应用程序开发框架。 Silverstripe CMS Silverstripe Framework 6.2.2之前版本存在跨站脚本漏洞，该漏洞源于“Insert media from web”功能对特制嵌入内容处理不当，容易受到跨站脚本攻击。
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 |
|---|---|---|---|---|
| silverstripe | silverstripe-framework | < 6.2.2 | - |
|
II. Public POCs for CVE-2026-54720
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-54720 (2)
-
🔗 CVE-2026-54720 XSS attack through media embed » Silverstripe CMS x_refsource_MISC
-
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V. Comments for CVE-2026-54720
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