Allowlist Bypass in setThemeRoot() Enables Cross-Origin CSS Injection

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

SAP UI5 versions before 1.38.49, 1.52.49, 1.60.34, 1.71.31, 1.78.18, 1.84.5, 1.85.4, 1.86.1 allows an unauthenticated attacker to redirect users to a malicious site due to Reverse Tabnabbing vulnerabilities.

The SAP Gateway, versions 7.5, 7.51, 7.52 and 7.53, allows an attacker to inject content which is displayed in the form of an error message. An attacker could thus mislead a user to believe this information is from the legitimate service when it's not.

SAP UI5 did not validate user input before adding it to the DOM structure. This may lead to malicious user-provided JavaScript code being added to the DOM that could steal user information. Software components affected are: SAP Hana Database 1.00, 2.00; SAP UI5 1.00; SAP UI5 (Java) 7.30, 7.31, 7.40, 7,50; SAP UI 7.40, 7.50, 7.51, 7.52, and version 2.0 of SAP UI for SAP NetWeaver 7.00