# CVE-2023-46099: Cross-site scripting in SIMATIC PCS neo

> Stored XSS in SIMATIC PCS neo allows high-privilege attackers to inject JavaScript executed by other users, risking account takeover.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L/E:P/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 14 Nov 2023
- **Updated:** 8 Jan 2025
- **Also known as:** GHSA-mhhf-5vm4-7jg8

## What is CVE-2023-46099?

CVE-2023-46099 is a medium-severity cross-site scripting vulnerability in Siemens SIMATIC PCS neo, published on 14 Nov 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A vulnerability has been identified in SIMATIC PCS neo (All versions < V4.1). There is a stored cross-site scripting vulnerability in the Administration Console of the affected product, that could allow an attacker with high privileges to inject Javascript code into the application that is later executed by another legitimate user.

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

## Which versions are affected by CVE-2023-46099?

It affects 1 product.


Products: Siemens Simatic Pcs Neo.

## How do I fix CVE-2023-46099?

No fix has been published for CVE-2023-46099 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-46099 being exploited?

There is no known exploitation of CVE-2023-46099 in the wild and no public exploit code.

## Other vulnerabilities in Siemens SIMATIC PCS neo

- [CVE-2025-40795](https://insights.sbomify.com/CVE-2025-40795/): Memory corruption in SIMATIC PCS neo V4.1 (critical 9.3)
- [CVE-2025-40796](https://insights.sbomify.com/CVE-2025-40796/): Memory corruption in SIMATIC PCS neo V4.1 (high 8.7)
- [CVE-2025-40797](https://insights.sbomify.com/CVE-2025-40797/): Denial of service in SIMATIC PCS neo V4.1 (high 8.7)
- [CVE-2025-40798](https://insights.sbomify.com/CVE-2025-40798/): Memory corruption in SIMATIC PCS neo V4.1 (high 8.7)
- [CVE-2025-30175](https://insights.sbomify.com/CVE-2025-30175/): Memory corruption in SIMATIC PCS neo V4.1 (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-46099 and fix it if it is affected.

What it is: CVE-2023-46099 is a medium-severity cross-site scripting vulnerability in Siemens SIMATIC PCS neo, published on 14 Nov 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-46099 in the wild and no public exploit code.

Affected product: Siemens SIMATIC PCS neo. 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-2023-46099/ (Markdown: https://insights.sbomify.com/CVE-2023-46099/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-46099
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-46099
- OSV: https://osv.dev/vulnerability/CVE-2023-46099

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-46099/
Summaries are generated and may contain mistakes; the official description above is the record.