CVE-2026-33431: Roxy-Wi

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. Prior to version 8.2.6.4, the POST /config/<service>/show API endpoint accepts a configver parameter that is directly appended to a base directory path to construct a local file path, which is subsequently opened and its contents returned to the caller. The existing path traversal guard only inspects the base directory variable (which is never user-controlled) and entirely ignores the user-supplied configver value. An authenticated attacker can supply a configver value containing `../` sequences to escape the intended directory and read arbitrary files accessible to the web application process. Version 8.2.6.4 contains a patch for the issue.

Affected products

• Roxy-Wi Roxy-Wi: before 8.2.6.4 (fixed in 8.2.6.4)

Published 2026-04-20. Last modified 2026-06-17.