ZDI-25-415: ServiceStack GetErrorResponse Improper Input Validation NTLM Relay Vulnerability

This vulnerability allows remote attackers to relay NTLM credentials on affected installations of ServiceStack. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The ZDI has assigned a CVSS rating of 5.9. The following CVEs are assigned: CVE-2025-6444.