CVE-2026-12071

Summary

The Webbox of TeamDavid by Tobit Laboratories AG constructs redirect URLs using user-supplied input, which is appended to the redirect target in a 302 HTTP response. By using URL-encoded characters such as “%2e” (representing a dot), an attacker can manipulate the portion of the URL following the top-level domain (TLD). If a similar, registerable TLD exists (for example, if “.com” is the application’s domain, and “.company” is available for registration), an attacker can craft a URL to redirect users to a malicious “.company” domain. By using URL-encoded line feeds, it becomes possible to insert arbitrary response headers in the server's HTTP response.

This issue affects TeamDavid through Rollout 524.

Affected Software

Weaknesses

• CWE-601: CWE-601 URL redirection to untrusted site ('open redirect')

References

• https://david.tobit.software/releasenotes
• https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/

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