# CVE-2020-36888: SpinetiX Fusion Digital Signage 3.4.8 Username Enumeration via Login Script

> Attackers can enumerate valid user accounts in SpinetiX Fusion Digital Signage by analyzing login error responses, facilitating targeted attacks.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Dec 2025
- **Updated:** 11 Dec 2025
- **Also known as:** GHSA-vhvc-4f6p-xp27

## What is CVE-2020-36888?

CVE-2020-36888 is a medium-severity vulnerability in SpenetiX AG Fusion Digital Signage, published on 10 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

SpinetiX Fusion Digital Signage 3.4.8 contains a username enumeration vulnerability in its login script that allows attackers to identify valid user accounts. Attackers can send crafted login requests with different usernames to distinguish between existing and non-existing accounts by analyzing the server's error responses.

Weakness: CWE-203 (Observable Discrepancy)

## Which versions are affected by CVE-2020-36888?

It affects 1 product.


Products: Spinetix Fusion Digital Signage.

## How do I fix CVE-2020-36888?

No fix has been published for CVE-2020-36888 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-36888 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-36888 exists.

## Other vulnerabilities in SpenetiX AG Fusion Digital Signage

- [CVE-2020-36883](https://insights.sbomify.com/CVE-2020-36883/): SpinetiX Fusion Digital Signage 3.4.8 Authenticated Path Traversal via File Operations (high 8.8)
- [CVE-2020-36887](https://insights.sbomify.com/CVE-2020-36887/): SpinetiX Fusion Digital Signage 3.4.8 Unauthenticated Database Backup Disclosure (high 8.7)
- [CVE-2020-36886](https://insights.sbomify.com/CVE-2020-36886/): SpinetiX Fusion Digital Signage 3.4.8 Cross-Site Request Forgery via User Creation (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-36888 and fix it if it is affected.

What it is: CVE-2020-36888 is a medium-severity vulnerability in SpenetiX AG Fusion Digital Signage, published on 10 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-36888 exists.

Affected product: SpenetiX AG Fusion Digital Signage. 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-2020-36888/ (Markdown: https://insights.sbomify.com/CVE-2020-36888/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-36888
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-36888
- OSV: https://osv.dev/vulnerability/CVE-2020-36888

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-36888/
Summaries are generated and may contain mistakes; the official description above is the record.