CVE-2026-27811 Roxy-WI has a Command Injection via diff parameter in config comparison allows authenticated RCE
Authenticated attackers can execute arbitrary system commands on the host via a command injection flaw in the configuration comparison feature.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-27811?
CVE-2026-27811 is a high-severity command injection vulnerability in roxy-wi, published on 17 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. Prior to version 8.2.6.3, a command injection vulnerability exists in the `/config/compare/<service>/<server_ip>/show` endpoint, allowed authenticated users to execute arbitrary system commands on the app host. The vulnerability exists in `app/modules/config/config.py` on line 362, where user input is directly formatted in the template string that is eventually executed. Version 8.2.6.3 fixes the issue.
Which versions are affected by CVE-2026-27811?
It affects 1 product.
Products include Roxy-Wi Roxy-Wi.
How do I fix CVE-2026-27811?
No fix has been published for CVE-2026-27811 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-27811 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27811 exists.
Other vulnerabilities in roxy-wi
- CVE-2022-31161 Roxy-WI Vulnerable to Unauthenticated Remote Code Execution via ssl_cert Upload
- CVE-2022-31137 Unauthenticated Remote Code Execution in Roxy-WI
- CVE-2022-31125 Authentication Bypass in Roxy-wi
- CVE-2022-31126 Unauthenticated Remote Code Execution in Roxy-wi
- CVE-2021-38167 SQL injection in n/a
Sources
Also known as GHSA-jvmv-cw47-jh77.