# CVE-2022-3073: Quaonos Schema ST4 example templates prone to XSS

> Remote attackers can inject JavaScript into Quanos Schema ST4 web templates to hijack sessions or execute scripts in user browsers.

- **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 Dec 2022
- **Updated:** 17 Apr 2025
- **Also known as:** GHSA-rgc4-35vf-wqw6

## What is CVE-2022-3073?

CVE-2022-3073 is a medium-severity cross-site scripting vulnerability in Quanos Schema ST4 example web templates, published on 14 Dec 2022. 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

Quanos "SCHEMA ST4" example web templates in version Bootstrap 2019 v2/2021 v1/2022 v1/2022 SP1 v1 or below are prone to JavaScript injection allowing a remote attacker to hijack existing sessions to e.g. other web services in the same environment or execute scripts in the users browser environment. The affected script is '*-schema.js'.

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

## Which versions are affected by CVE-2022-3073?

It affects 9 products.


Products: Weidmueller 19 Iot Md01 Lan H4 S0011 Firmware, Weidmueller Fp Iot Md01 4eu S2 00000 Firmware, Weidmueller Fp Iot Md01 Lan S2 00000 Firmware, Weidmueller Fp Iot Md01 Lan S2 00011 Firmware, Weidmueller Fp Iot Md02 4eu S3 00000 Firmware, Weidmueller Iot-Gw30-4g-Eu Firmware, Weidmueller Iot-Gw30 Firmware, Weidmueller Uc20-Wl2000-Ac Firmware, Weidmueller Uc20-Wl2000-Iot Firmware.

## How do I fix CVE-2022-3073?

No fix has been published for CVE-2022-3073 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-3073 being exploited?

There is no known exploitation of CVE-2022-3073 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-3073 and fix it if it is affected.

What it is: CVE-2022-3073 is a medium-severity cross-site scripting vulnerability in Quanos Schema ST4 example web templates, published on 14 Dec 2022. 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-2022-3073 in the wild and no public exploit code.

Affected product: Quanos Schema ST4 example web templates. 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-2022-3073/ (Markdown: https://insights.sbomify.com/CVE-2022-3073/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-3073
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-3073
- OSV: https://osv.dev/vulnerability/CVE-2022-3073

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-3073/
Summaries are generated and may contain mistakes; the official description above is the record.