CVE-2026-67289
FreeRDP before 3.29.0 HTTP Proxy Request Injection via Redirection
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
FreeRDP before 3.29.0 (affected versions <= 3.28.0) does not validate CRLF and control characters in the server-controlled RDP redirection TargetNetAddress field. This value is copied into the client's ServerHostname and, when the client connects through an HTTP proxy, is written directly into the proxy CONNECT request line and Host header by http_proxy_connect() without filtering. A malicious or compromised RDP server can send a crafted redirection PDU containing embedded control characters to inject arbitrary headers/requests into the HTTP proxy CONNECT request.
| CWE | CWE-113 |
| Vendor | freerdp |
| Product | freerdp |
| Published | Aug 1, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
FreeRDP / FreeRDP
0 < 3.29.0
References
Credits
🔍 1121984919