CVE-2026-54214 TeamDavid: Header Injection through the 'cType' URL parameter
Attackers can inject headers via the cType parameter to cause open redirects, mitigated by disabling the feature in Rollout 528.
- 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-2026-54214?
CVE-2026-54214 is a medium-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 HTTP header injection through the “cType” URL parameter, which allows arbitrary modification of the Content-Type header in HTTP responses. Because the parameter does not properly restrict control characters such as URL-encoded newlines (“%0a”) or colons, attackers can inject additional headers including extra Location headers into the server’s response. This results e.g. in an open redirect vulnerability. 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-601
Which versions are affected by CVE-2026-54214?
How do I fix CVE-2026-54214?
No fix has been published for CVE-2026-54214 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-54214 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54214 exists.
Sources
Also known as GHSA-xjch-93pr-7c7c.