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CVE-2026-45558— Roxy-WI: Authenticated RCE on every managed HAProxy load balancer via `option` field config injection in section save

Quick assessment

Affected
roxy-wi roxy-wi
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Roxy-WI是Roxy-WI开源的一款用于管理 Haproxy、Nginx 和 Keepalived 服务器的 Web 界面。 Roxy-WI 8.2.6.4及之前版本存在输入验证错误漏洞，该漏洞源于HAProxy部分保存端点接受未验证、未转义的JSON选项字段并直接渲染到生成的HAProxy配置中，认证用户可注入任意HAProxy指令导致远程代码执行。

CVSS 9.9 · Critical EPSS 0.79% · P55

Affected Version Matrix 1

VendorProduct Version RangeStatus
roxy-wi roxy-wi <= 8.2.6.4 affected
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I. Basic Information for CVE-2026-45558

Vulnerability Information
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Vulnerability Title
Roxy-WI: Authenticated RCE on every managed HAProxy load balancer via `option` field config injection in section save
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Roxy-WI 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Roxy-WI是Roxy-WI开源的一款用于管理 Haproxy、Nginx 和 Keepalived 服务器的 Web 界面。 Roxy-WI 8.2.6.4及之前版本存在输入验证错误漏洞，该漏洞源于HAProxy部分保存端点接受未验证、未转义的JSON选项字段并直接渲染到生成的HAProxy配置中，认证用户可注入任意HAProxy指令导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
roxy-wi roxy-wi <= 8.2.6.4 -

II. Public POCs for CVE-2026-45558

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Qwen3.6-35B-A3B · 6487 chars
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III. Intelligence Information for CVE-2026-45558

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Vendor Advisories for CVE-2026-45558 (1)

Same Patch Batch · roxy-wi · 2026-06-10 · 14 CVEs total

CVE-2026-45556 9.9 CRITICAL Roxy-WI: Authenticated arbitrary file write on every managed load balancer (and downstream
CVE-2026-45552 9.9 CRITICAL Roxy-WI: Cross-tenant authorization bypass on /install/* — guest can run Ansible / SSH on
CVE-2026-45550 9.1 CRITICAL Roxy-WI: IDOR on PUT /smon/check — any user can rewrite any tenant's monitoring URL/IP/bod
CVE-2026-45564 8.8 HIGH Roxy-WI: Authenticated RCE via 'configver' URL parameter (os.system sink in /config/versio
CVE-2026-45549 8.5 HIGH Roxy-WI: Authorization bypass on POST /smon/agent/action/<action> — guest can stop or rest
CVE-2026-45567 8.3 HIGH Roxy-WI: Authentication bypass via 'api' substring in URL + unauthenticated /api/gpt
CVE-2026-45569 8.1 HIGH Roxy-WI: Path-traversal patch in commit d4d10006 is a no-op (tuple-membership bug)
CVE-2026-45565 8.1 HIGH Roxy-WI: EscapedString validator skips its '..' block when stripping (root cause for sever
CVE-2026-45561 6.5 MEDIUM Roxy-WI: SSRF in /smon/agent/<endpoint>/<server_ip> reachable to cloud metadata IPs
CVE-2026-45566 6.1 MEDIUM Roxy-WI: Open redirect on /login?next= via basic-auth userinfo syntax bypass
CVE-2026-45560 6.1 MEDIUM Roxy-WI: Stored XSS in log viewer (wrap_line/highlight_word produce unescaped HTML)
CVE-2026-45559 4.9 MEDIUM Roxy-WI: LDAP injection in /user/ldap/<username> (admin-only)
CVE-2026-45563 4.3 MEDIUM Roxy-WI: IDOR — any authenticated user can read another user's full action history

IV. Related Vulnerabilities

Same product: roxy-wi
Same vendor: roxy-wi
Same weakness: CWE-20

V. Comments for CVE-2026-45558

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