RCE in Roxy-Wi
CVE-2026-27811
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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.030 (87.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.030 · change: +0.010
Affected products
- Roxy-Wi — versions < 8.2.6.3
Weakness classification (CWE)
References
- github.com/roxy-wi/roxy-wi/security/advisories/GHSA-jvmv-cw47-jh77 (Exploit, Mitigation, Vendor Advisory)
- github.com/roxy-wi/roxy-wi/commit/a10ac7306c252014f97a7213db4a9470300fa064 (Patch)
- github.com/roxy-wi/roxy-wi/releases/tag/v8.2.6.3 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-27811?
- CVE-2026-27811 is a high-severity vulnerability in Roxy-Wi, classified under Command Injection. CVSS score: 8.8/10. Published 2026-03-18.
- How severe is CVE-2026-27811?
- High severity. CVSS v3 base score is 8.8 out of 10.