# CVE-2020-29029: XSS issue due to insufficient sanitization of input field

> An attacker can execute arbitrary JavaScript code via insufficient input sanitization in the Secomea GateManager Web GUI.

- **Severity:** High 7.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Mar 2021
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-3938-vx68-327v

## What is CVE-2020-29029?

CVE-2020-29029 is a high-severity cross-site scripting vulnerability in Secomea GateManager, published on 5 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Improper Input Validation, Cross-site Scripting (XSS) vulnerability in Web GUI of Secomea GateManager allows an attacker to execute arbitrary javascript code. This issue affects: Secomea GateManager all versions prior to 9.4.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2020-29029?

It affects 1 product.


Products: Secomea Gatemanager Firmware.

## How do I fix CVE-2020-29029?

No fix has been published for CVE-2020-29029 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-29029 being exploited?

There is no known exploitation of CVE-2020-29029 in the wild and no public exploit code.

## Other vulnerabilities in Secomea GateManager

- [CVE-2020-29030](https://insights.sbomify.com/CVE-2020-29030/): Insufficient CSRF guards (high 8.1)
- [CVE-2020-29028](https://insights.sbomify.com/CVE-2020-29028/): Reflected XSS issues (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-29029 and fix it if it is affected.

What it is: CVE-2020-29029 is a high-severity cross-site scripting vulnerability in Secomea GateManager, published on 5 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-29029 in the wild and no public exploit code.

Affected product: Secomea GateManager. 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-2020-29029/ (Markdown: https://insights.sbomify.com/CVE-2020-29029/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-29029
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-29029
- OSV: https://osv.dev/vulnerability/CVE-2020-29029

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-29029/
Summaries are generated and may contain mistakes; the official description above is the record.