# CVE-2026-4169: Tecnick TCExam XML Export tce_xml_users.php F_xml_export_users cross site scripting

> An attacker with administrator privileges can inject malicious scripts via XML export, potentially leading to code execution in the TCExam web application.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Mar 2026
- **Updated:** 16 Mar 2026
- **Also known as:** GHSA-rgqq-mw78-fj3h

## What is CVE-2026-4169?

CVE-2026-4169 is a medium-severity cross-site scripting vulnerability in Tecnick TCExam, published on 15 Mar 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

A security flaw has been discovered in Tecnick TCExam up to 16.6.0. Affected is the function F_xml_export_users of the file admin/code/tce_xml_users.php of the component XML Export. Performing a manipulation results in cross site scripting. Remote exploitation of the attack is possible. There are still doubts about whether this vulnerability truly exists. Upgrading to version 16.6.1 is able to address this issue. The patch is named 899b5b2fa09edfe16043f07265e44fe2022b7f12. It is suggested to upgrade the affected component. When the vendor was informed about another security issue, he identified and fixed this flaw during analysis. He doubts the impact of this: "However, this is difficult to justify as security issue. It requires to be administrator to both create and consume the exploit. Administrators can do pretty much anything in the platform, so I don't see the point of this from a security perspective." This is reflected by the CVSS vector.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-4169?


## How do I fix CVE-2026-4169?

No fix has been published for CVE-2026-4169 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4169 being exploited?

There is no known exploitation of CVE-2026-4169 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4169 and fix it if it is affected.

What it is: CVE-2026-4169 is a medium-severity cross-site scripting vulnerability in Tecnick TCExam, published on 15 Mar 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-4169 in the wild and no public exploit code.

Affected product: Tecnick TCExam. 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-2026-4169/ (Markdown: https://insights.sbomify.com/CVE-2026-4169/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4169
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4169
- OSV: https://osv.dev/vulnerability/CVE-2026-4169

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-4169/
Summaries are generated and may contain mistakes; the official description above is the record.