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CVE-2026-44767— Allowlist Bypass in setThemeRoot() Enables Cross-Origin CSS Injection

CVSS 6.1 · Medium EPSS 0.18% · P8

Affected Version Matrix 1

VendorProductVersion RangeStatus
SAP_SE@ui5/webcomponents-base@ui5/webcomponents-base < 2.21.0affected
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I. Basic Information for CVE-2026-44767

Vulnerability Information
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Vulnerability Title
Allowlist Bypass in setThemeRoot() Enables Cross-Origin CSS Injection
Source: CVE Program / CVE List V5
Vulnerability Description
setThemeRoot() failed to enforce the sap-allowed-theme-origins allowlist. An attacker-controlled absolute cross-origin URL could be stored and used directly to construct a <link rel=stylesheet> element, even when no <meta name=sap-allowed-theme-origins> tag was present in the document. The same bypass was reachable via the ?sap-themeRoot URL parameter.Exploitation requires attacker-influenced input (e.g., a URL query parameter, tenant configuration, or user-supplied setting) to reach setThemeRoot(). A successful exploit allows an attacker to inject arbitrary CSS into the victim page, enabling:- UI redressing and clickjacking- Phishing overlays- Visual defacement- Limited data exfiltration via CSS attribute selectors targeting predictable DOM content
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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
SAP ui5 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SAP ui5是德国SAP公司的一套Web前端UI开发框架。 SAP ui5 2.21.0之前版本存在跨站脚本漏洞，该漏洞源于setThemeRoot()未能执行sap-allowed-theme-origins白名单，导致攻击者可通过存储的跨源URL或?sap-themeRoot参数构造<link rel=stylesheet>元素，注入任意CSS，从而进行UI重写和点击劫持、钓鱼覆盖、视觉篡改以及通过CSS属性选择器针对可预测DOM内容进行有限的数据泄露。
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

VendorProductAffected VersionsCPESubscribe
SAP_SE@ui5/webcomponents-base @ui5/webcomponents-base < 2.21.0 -

II. Public POCs for CVE-2026-44767

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III. Intelligence Information for CVE-2026-44767

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Vendor Advisories for CVE-2026-44767 (1)

Same Patch Batch · SAP_SE · 2026-07-14 · 15 CVEs total

CVE-2026-447479.9 CRITICALMemory Corruption vulnerability in SAP NetWeaver Application Server ABAP
CVE-2026-276909.1 CRITICALHTTP Request Smuggling in SAP Approuter
CVE-2026-447619.1 CRITICALInsecure Sample Credentials in SAP Commerce Cloud
CVE-2026-04878.4 HIGHDLL Hijacking vulnerability in SAProuter on Microsoft Windows
CVE-2026-447528.2 HIGHCross-Site Scripting (XSS) vulnerability in SAP NetWeaver Application Server Java(Configur
CVE-2026-447458.1 HIGHOpen Redirect vulnerability in SAP Approuter
CVE-2026-582337.6 HIGHRemote Code Execution vulnerability in SAP Change and Transport System Attach Tool (ctsatt
CVE-2026-447596.1 MEDIUMCross Site Scripting (XSS) vulnerability in SAP NetWeaver Enterprise Portal
CVE-2026-447695.5 MEDIUMSQL Injection vulnerability in SAP S/4HANA Project Management (PPM-PRO)
CVE-2026-447604.7 MEDIUMCross-Site Scripting (XSS) vulnerability in SAP NetWeaver Application Server ABAP (applica
CVE-2026-447714.3 MEDIUMMissing Authorization check in SAP S/4HANA (Draft operation)
CVE-2026-447704.3 MEDIUMMissing Authorization check in SAP S/4 HANA (Create Single Payment)
CVE-2026-447684.1 MEDIUMSecurity misconfiguration in SAP CRM (WebClient UI)
CVE-2026-447533.7 LOWInformation Disclosure vulnerability in SAP HANA Extended Application Services classic mod

IV. Related Vulnerabilities

Same vendor: SAP_SE
Same weakness: CWE-79

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