# CVE-2023-27499: Cross-Site Scripting (XSS) vulnerability in SAP GUI for HTML

> Reflected XSS in SAP GUI for HTML allows attackers to execute scripts in victims' browsers via malicious URLs, enabling data theft or modification.

- **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:** 11 Apr 2023
- **Updated:** 7 Feb 2025
- **Also known as:** GHSA-mqmw-59rf-wv9g

## What is CVE-2023-27499?

CVE-2023-27499 is a medium-severity cross-site scripting vulnerability in Sap Netweaver, published on 11 Apr 2023. 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 GUI for HTML - versions KERNEL 7.22, 7.53, 7.54, 7.77, 7.81, 7.85, 7.89, 7.91, KRNL64UC, 7.22, 7.22EXT, KRNL64UC 7.22, 7.22EXT does not sufficiently encode user-controlled inputs, resulting in a reflected Cross-Site Scripting (XSS) vulnerability. An attacker could craft a malicious URL and lure the victim to click, the script supplied by the attacker will execute in the victim user's browser. The information from the victim's web browser can either be modified or read and sent to the attacker.

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

## Which versions are affected by CVE-2023-27499?

It affects 2 products.


Products: Sap Netweaver, Sap Netweaver Application Server Abap.

## How do I fix CVE-2023-27499?

No fix has been published for CVE-2023-27499 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-27499 being exploited?

There is no known exploitation of CVE-2023-27499 in the wild and no public exploit code.

## Other vulnerabilities in Sap Netweaver

- [CVE-2025-31324](https://insights.sbomify.com/CVE-2025-31324/): SAP NetWeaver Unrestricted File Upload (critical 10.0, exploited in the wild)
- [CVE-2021-38163](https://insights.sbomify.com/CVE-2021-38163/): SAP NetWeaver Unrestricted File Upload (critical 9.9, exploited in the wild)
- [CVE-2025-42999](https://insights.sbomify.com/CVE-2025-42999/): SAP NetWeaver Deserialization (critical 9.1, exploited in the wild)
- [CVE-2013-6822](https://insights.sbomify.com/CVE-2013-6822/): XML external entity in n/a (critical 10.0)
- [CVE-2011-1517](https://insights.sbomify.com/CVE-2011-1517/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-27499 and fix it if it is affected.

What it is: CVE-2023-27499 is a medium-severity cross-site scripting vulnerability in Sap Netweaver, published on 11 Apr 2023. 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-2023-27499 in the wild and no public exploit code.

Affected product: Sap Netweaver. 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-2023-27499/ (Markdown: https://insights.sbomify.com/CVE-2023-27499/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-27499
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-27499
- OSV: https://osv.dev/vulnerability/CVE-2023-27499

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-27499/
Summaries are generated and may contain mistakes; the official description above is the record.