CVE-2026-54208 TeamDavid: Arbitrary File Write leading to Stored XSS
Unauthenticated attackers can write arbitrary files containing malicious scripts, leading to stored XSS and potential code execution on the server.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-54208?
CVE-2026-54208 is a high-severity vulnerability in Tobit Laboratories AG TeamDavid, published on 7 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Tobit Laboratories AG TeamDavid's Webbox application is vulnerable to arbitrary file write, allowing an unauthenticated attacker to create or write into existing files on the server with attacker-controlled content. This is possible because user input is written directly to files without proper validation or restriction on file types. As a result, an attacker can create files (e.g., .htm), containing malicious JavaScript code. When a user accesses a file created in this way, stored cross-site scripting is triggered. 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.
Which versions are affected by CVE-2026-54208?
How do I fix CVE-2026-54208?
No fix has been published for CVE-2026-54208 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-54208 being exploited?
There is no known exploitation of CVE-2026-54208 in the wild and no public exploit code.
Sources
Also known as GHSA-9qx3-7v72-8555.