CVE-2026-44767: SAP_SE @ui5/webcomponents-base, XSS

Описание

Оригинално описание

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

Засегнати продукти

• SAP_SE @ui5/webcomponents-base: @ui5/webcomponents-base < 2.21.0

Вид слабост

• CWE-79 XSS

История

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-44767
• https://nvd.nist.gov/vuln/detail/CVE-2026-44767
• https://github.com/UI5/webcomponents/security/advisories/GHSA-p8gx-753q-v89p
• https://url.sap/sapsecuritypatchday