HTTP Response Splitting Affecting freerdp-devel package, versions <2:2.11.7-7.el9_8.5


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.38% (31st percentile)

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  • Snyk IDSNYK-ORACLE9-FREERDPDEVEL-18786901
  • published14 Aug 2026
  • disclosed1 Aug 2026

Introduced: 1 Aug 2026

NewCVE-2026-67289  (opens in a new tab)
CWE-113  (opens in a new tab)

How to fix?

Upgrade Oracle:9 freerdp-devel to version 2:2.11.7-7.el9_8.5 or higher.
This issue was patched in ELSA-2026-54487.

NVD Description

Note: Versions mentioned in the description apply only to the upstream freerdp-devel package and not the freerdp-devel package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1