# CVE-2026-40137: Cross-Site Scripting (XSS) vulnerability in Business Server Pages Application (TAF_APPLAUNCHER)

> Unauthenticated attackers can craft malicious links to execute scripts in victims' browsers, potentially exposing or altering sensitive information.

- **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:** 12 May 2026
- **Updated:** 12 May 2026
- **Also known as:** GHSA-qx93-pqj3-crqc

## What is CVE-2026-40137?

CVE-2026-40137 is a medium-severity cross-site scripting vulnerability in SAP_SE Business Server Pages Application (TAF_APPLAUNCHER), published on 12 May 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

SAP TAF_APPLAUNCHER within Business Server Pages allows an unauthenticated attacker to craft malicious links that, when clicked by a victim, redirects them to attacker?controlled sites, potentially exposing or altering sensitive information in the victim�s browser. This results in a low impact on confidentiality and integrity, with no impact on the availability of the application.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-40137?


## How do I fix CVE-2026-40137?

No fix has been published for CVE-2026-40137 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-40137 being exploited?

There is no known exploitation of CVE-2026-40137 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-40137 and fix it if it is affected.

What it is: CVE-2026-40137 is a medium-severity cross-site scripting vulnerability in SAP_SE Business Server Pages Application (TAF_APPLAUNCHER), published on 12 May 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-2026-40137 in the wild and no public exploit code.

Affected product: SAP_SE Business Server Pages Application (TAF_APPLAUNCHER). 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-2026-40137/ (Markdown: https://insights.sbomify.com/CVE-2026-40137/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-40137
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40137
- OSV: https://osv.dev/vulnerability/CVE-2026-40137

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-40137/
Summaries are generated and may contain mistakes; the official description above is the record.