Vulnerability in Freerdp
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.
Vulnerability class: CRLF Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-87v8-2gwr-ww9j (vendor-advisory)
- www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-http-header-injection-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-110835?
- CVE-2026-110835 is a medium-severity vulnerability in Freerdp, classified under CRLF Injection. CVSS score: 4.0/10. Published 2026-10-14.
- How severe is CVE-2026-110835?
- Medium severity. CVSS v3 base score is 4.0 out of 10.