CVE-2026-45558

Summary

Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. In versions 8.2.6.4 and prior, the HAProxy section-save endpoints (POST /api/service/haproxy/<server_id>/section/<section_type> and the PUT / global / defaults variants) accept a JSON option field that is not validated, not escaped, and is rendered verbatim into the generated HAProxy configuration via the section.j2, global.j2, and defaults.j2 Ansible templates. Because Roxy-WI then pushes the generated config to the load balancer and runs systemctl reload haproxy, an authenticated user with role ≤ 3 (user) can inject arbitrary HAProxy directives into the config that runs on every load balancer their group manages — including option external-check + external-check command /bin/bash -c '…', which gives remote code execution on the load balancer as the haproxy user on every health-check tick. At time of publication, there are no publicly available patches.

Affected Software

Weaknesses

• CWE-20: CWE-20: Improper Input Validation
• CWE-77: CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
• CWE-78: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
• CWE-94: CWE-94: Improper Control of Generation of Code ('Code Injection')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: total

Additional References

• https://github.com/roxy-wi/roxy-wi/security/advisories/GHSA-w2x4-66jj-3597

References

• https://github.com/roxy-wi/roxy-wi/security/advisories/GHSA-w2x4-66jj-3597

• ←Previous
• Next→