CVE-2026-110835
FreeRDP 3.0.0 before 3.32.0 HTTP Header Injection via Proxy Routing Token
- State
- Published
- Severity
- 6.3 Medium
- Published
- Oct 14, 2026
- Updated
- Oct 18, 2026
- Reserved
- Oct 14, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.3 Medium | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N | VulnCheck |
| 3.1 | 4.0 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N | VulnCheck |
Weaknesses
- CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
Affected Products
| Product | Versions |
|---|---|
FreeRDPFreeRDP |
|
References
- GitHub Security Advisory (GHSA-87v8-2gwr-ww9j)vendor-advisory
- VulnCheck Advisory: FreeRDP 3.0.0 before 3.32.0 HTTP Header Injection via Proxy Routing Tokenthird-party-advisory
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