# CVE-2020-28968: Cross-site scripting in n/a

> Attackers can execute arbitrary scripts via stored XSS in the RADIUS configuration module of Draytek VigorAP 1000C devices.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 22 Oct 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-vr5f-m5f2-8mpp

## What is CVE-2020-28968?

CVE-2020-28968 is a medium-severity cross-site scripting vulnerability in n/a, published on 22 Oct 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Draytek VigorAP 1000C contains a stored cross-site scripting (XSS) vulnerability in the RADIUS Setting - RADIUS Server Configuration module. This vulnerability allows attackers to execute arbitrary web scripts or HTML via a crafted payload in the username input field.

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

## Which versions are affected by CVE-2020-28968?

It affects 13 products.


Products: Draytek Vigorap 1000c Firmware, Draytek Vigorap 700 Firmware, Draytek Vigorap 710 Firmware, Draytek Vigorap 800 Firmware, Draytek Vigorap 802 Firmware, Draytek Vigorap 810 Firmware, Draytek Vigorap 900 Firmware, Draytek Vigorap 902 Firmware, Draytek Vigorap 903 Firmware, Draytek Vigorap 910c Firmware, Draytek Vigorap 912c Firmware, Draytek Vigorap 918r Firmware, Draytek Vigorap 920r Firmware.

## How do I fix CVE-2020-28968?

No fix has been published for CVE-2020-28968 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-28968 being exploited?

There is no known exploitation of CVE-2020-28968 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-28968 and fix it if it is affected.

What it is: CVE-2020-28968 is a medium-severity cross-site scripting vulnerability in n/a, published on 22 Oct 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-28968 in the wild and no public exploit code.

Affected product: n/a. 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-2020-28968/ (Markdown: https://insights.sbomify.com/CVE-2020-28968/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-28968
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-28968
- OSV: https://osv.dev/vulnerability/CVE-2020-28968

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-28968/
Summaries are generated and may contain mistakes; the official description above is the record.