CVE-2026-110835

FreeRDP 3.0.0 before 3.32.0 allows HTTP header injection in its proxy because a lone LF in the target portion of a routing token (Cookie: msts=) is not rejected and is written by http_proxy_connect into the CONNECT request line and Host header. A remote unauthenticated RDP client connecting to a proxy using FixedTarget=false and an upstream HTTP proxy can alter HTTP request/header framing at that upstream proxy.

CVSS v3 4.0 MEDIUM

4.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-87v8-2gwr-ww9j	Exploit Vendor Advisory
https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-http-header-injection-via-proxy-routing-token	Third Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-87v8-2gwr-ww9j	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*

History

23 Oct 2026, 20:51

Type	Values Removed	Values Added
CPE		cpe:2.3:a:freerdp:freerdp::::::::
References	~~() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-87v8-2gwr-ww9j -~~	() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-87v8-2gwr-ww9j - Exploit, Vendor Advisory
References	~~() https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-http-header-injection-via-proxy-routing-token -~~	() https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-http-header-injection-via-proxy-routing-token - Third Party Advisory
First Time		Freerdp Freerdp freerdp

18 Oct 2026, 12:17

Type	Values Removed	Values Added
References	~~() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-87v8-2gwr-ww9j -~~	() https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-87v8-2gwr-ww9j -

14 Oct 2026, 23:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-14 23:17

Updated : 2026-10-23 20:51

NVD link : CVE-2026-110835

Mitre link : CVE-2026-110835

CVE.ORG link : CVE-2026-110835

JSON object : View

Products Affected

freerdp

freerdp

CWE

CWE-93

Improper Neutralization of CRLF Sequences ('CRLF Injection')

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