CVE-2026-67289

Description

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.

References

https://www.vulncheck.com/advisories/freerdp-before-http-proxy-request-injection-via-redirection

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mwwh-mhp9-q7vm

https://github.com/FreeRDP/FreeRDP/commit/f3b4347105114fe7453828736bea069999af319f

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4