CVE-2026-44767 Allowlist Bypass in setThemeRoot() Enables Cross-Origin CSS Injection
Attackers can inject arbitrary CSS via cross-origin URLs, enabling UI redressing, phishing overlays, and limited data exfiltration in SAP UI5 applications.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-44767?
CVE-2026-44767 is a medium-severity cross-site scripting vulnerability in SAP_SE @ui5/webcomponents-base, published on 14 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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
Weakness: CWE-79
Which versions are affected by CVE-2026-44767?
How do I fix CVE-2026-44767?
No fix has been published for CVE-2026-44767 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-44767 being exploited?
There is no known exploitation of CVE-2026-44767 in the wild and no public exploit code.
Sources
Also known as GHSA-5hp5-q35j-vjpg.