# CVE-2026-54213: TeamDavid: Denial of Service via endpoint 'internalRestart'

> Unauthenticated remote attackers can shut down the TeamDavid Webbox server via the internalRestart endpoint, causing persistent denial of service.

- **Severity:** Critical 9.2 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Aug 2026
- **Updated:** 7 Sep 2026
- **Also known as:** GHSA-wrxj-2wgm-px6x

## What is CVE-2026-54213?

CVE-2026-54213 is a critical denial of service vulnerability in Tobit Laboratories AG TeamDavid, published on 7 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Tobit Laboratories AG TeamDavid's Webbox application exposes a functionality that allows the server to be 
shut down when a specific endpoint (/internalRestart) is accessed. This 
endpoint is accessible to unauthenticated users over the public 
Internet. Instead of “restarting”, the server shuts completely down. As a
 result, a remote attacker can trigger a persistent denial of service by
 shutting down the web server without requiring authentication. Recovery
 requires manual administrator intervention to restart the service. This issue affects TeamDavid before Rollout 528.

Starting with Rollout 528 (June 30, 2026), the affected functionality is disabled by default and the vulnerabilities are therefore no longer exposed through this functionality.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2026-54213?


## How do I fix CVE-2026-54213?

No fix has been published for CVE-2026-54213 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-54213 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54213 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-54213 and fix it if it is affected.

What it is: CVE-2026-54213 is a critical denial of service vulnerability in Tobit Laboratories AG TeamDavid, published on 7 Aug 2026. 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-2026-54213 exists.

Affected product: Tobit Laboratories AG TeamDavid. 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-2026-54213/ (Markdown: https://insights.sbomify.com/CVE-2026-54213/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-54213
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-54213
- OSV: https://osv.dev/vulnerability/CVE-2026-54213

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-54213/
Summaries are generated and may contain mistakes; the official description above is the record.