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
Affects freerdpSource GCVE Database
Not known to be exploited · CVSS 5.8 Medium · fixed in 3.32.0+dfsg-0ubuntu0.24.04.1 : update freerdp when convenient.
Data as of 27 Oct 2026, 08:12 UTC
- Patch
- Available – fixed in 3.32.0+dfsg-0ubuntu0.24.04.1, 3.32.0+dfsg-0ubuntu0.26.04.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 15 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade the Ubuntu freerdp3 to 3.32.0+dfsg-0ubuntu0.24.04.1 (package) or 3.32.0+dfsg-0ubuntu0.26.04.1 (package).
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.04 LTSfreerdp3pkg:deb/ubuntu/freerdp3?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSfreerdp3pkg:deb/ubuntu/freerdp3?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu Pro 24.04 LTSfreerdp2pkg:deb/ubuntu/freerdp2?arch=source&distro=esm-apps/nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSfreerdp2pkg:deb/ubuntu/freerdp2?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu Pro 20.04 LTSfreerdp2pkg:deb/ubuntu/freerdp2?arch=source&distro=esm-infra/focalOther threats | Affected
| Fixed in– |
Ubuntu Pro 18.04 LTSfreerdp2pkg:deb/ubuntu/freerdp2?arch=source&distro=esm-infra/bionicOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and should be applied. Fixed versions include 3.32.0+dfsg-0ubuntu0.24.04.1 and 3.32.0+dfsg-0ubuntu0.26.04.1. Upgrading to these versions or later will remediate the vulnerability.
Description
FreeRDP versions before 3.32.0 contain an HTTP header injection vulnerability in its proxy component. This occurs because a lone line feed (LF) character in the target portion of a routing token (Cookie: msts=) is not properly rejected. An unauthenticated remote RDP client connecting to a proxy with FixedTarget=false and an upstream HTTP proxy can manipulate HTTP request and header framing at the upstream proxy.
References
- ubuntu.com/security/CVE-2026-110835 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-110835 (opens in a new tab)
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-87v8-2gwr-ww9j (opens in a new tab)
- vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-http-header-injection-via-proxy-routing-token (opens in a new tab)