# 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.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **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 available:** No
- **Published:** 14 Jul 2026
- **Updated:** 14 Jul 2026
- **Also known as:** GHSA-5hp5-q35j-vjpg

## 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 (Improper Neutralization of Input During Web Page Generation)

## 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.

## Is CVE-2026-44767 being exploited?

There is no known exploitation of CVE-2026-44767 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-44767 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-44767 in the wild and no public exploit code.

Affected product: SAP_SE @ui5/webcomponents-base. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-44767/ (Markdown: https://insights.sbomify.com/CVE-2026-44767/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-44767
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-44767
- OSV: https://osv.dev/vulnerability/CVE-2026-44767

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-44767/
Summaries are generated and may contain mistakes; the official description above is the record.