CVE-2026-110835

MEDIUM 4.0

FreeRDP 3.0.0 before 3.32.0 HTTP Header Injection via Proxy Routing Token

CVSS Score

4.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-93
Vendor	freerdp
Product	freerdp
Published	Oct 14, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

FreeRDP / FreeRDP

3.0.0 < 3.32.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Kushalkhemka mayank-jangid-moon skigeek16 opensec-intelligence