OS Command Injection in Roxy-WI - CVE-2026-27811
Published: April 20, 2026
Vulnerability identifier: #VU126544
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-27811
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary commands on the app host.
The vulnerability exists due to command injection in the /config/compare///show endpoint when processing the left and right parameters for configuration comparison. A remote user can send specially crafted left and right values to execute arbitrary commands on the app host.
Exploitation requires access to one of the supported services with a configuration directory: haproxy, nginx, apache, or keepalived.
Affected software
Roxy-WI
How to mitigate CVE-2026-27811
Install security update from vendor's website.
Roxy-WI - update to 8.2.6.3