CVE-2026-12071 PUBLISHED

TeamDavid: Header Injection leading to Open Redirect via URL-encoded characters

Assigner: NCSC.ch
Reserved: 12.06.2026 Published: 07.08.2026 Updated: 07.08.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
CVSS Score: 5.3

Product Status

Vendor Tobit Laboratories AG
Product TeamDavid
Versions Default: unaffected
  • affected from 0 to Rollout 524 (incl.)

Credits

  • Dario Weiss of InfoGuard Labs finder
  • Olivier Becker of InfoGuard Labs finder
  • Lucas Dodgson of InfoGuard Labs finder

References

Problem Types

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