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TI-2026-33307 Aliases CVE-2026-45558

Roxy-WI: Authenticated RCE on every managed HAProxy load balancer via `option` field config injection in section save

Priority HIGH 76CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-77.

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00439 38th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
roxy-wiroxy-wiup to 8.2.6.4—No fix listedCNA
  • roxy-wi Vendorroxy-wi Affected up to 8.2.6.4 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:roxy-wi:roxy-wi:*:*:*:*:*:*:*:*——roxy-wi
  • cpe:2.3:a:roxy-wi:roxy-wi:*:*:*:*:*:*:*:* Versions — — ·roxy-wi

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45558
  2. 2026-10-25 EPSS moved to the below the 50th percentile

References

Other 1

  • TI-2022-13181 Unauthenticated Remote Code Execution in Roxy-WI CVSS 3.1CRITICAL 10.0
  • TI-2022-13170 Unauthenticated Remote Code Execution in Roxy-wi CVSS 3.1CRITICAL 10.0
  • TI-2026-25520 Roxy-WI has SQL Injection in haproxy_section_save Endpoint via Unsanitized server_ip Parameter CVSS 4.0HIGH 8.9
  • TI-2026-25518 Roxy-WI vulnerable to path traversal and arbitrary file writing CVSS 4.0HIGH 8.9
  • TI-2026-33305 Improper input validation in roxy-wi CVSS 3.1CRITICAL 9.9
  • TI-2026-33301 Roxy-WI: Cross-tenant authorization bypass on /install/* — guest can run Ansible / SSH on every registered server CVSS 3.1CRITICAL 9.9
See all 33 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences