critical CVSS 9.8

CVE-2026-33078·Python vulnerability

Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. Versions prior to 8.2.6.4 have a SQL injection vulnerability in the haproxy_section_save function in app/routes/config/routes.py. The server_ip parameter, sourced from the URL path, is passed unsanitized through multiple function calls and ultimately interpolated into a SQL query string using Python string formatting, allowing attackers to execute arbitrary SQL commands. Version 8.2.6.4 fixes the issue.

Severity
critical
Software
Python
Fixed in
8.2.6.4
Published
2026-04-24

Affected versions

Until: 8.2.6.4

Fixed in: 8.2.6.4

How to fix this CVE

Roxy-WI versions before 8.2.6.4 contain a critical SQL injection vulnerability in the haproxy configuration management function that allows remote attackers to execute arbitrary SQL queries through unsanitized URL parameters. Immediately upgrade Roxy-WI to version 8.2.6.4 or later to apply the necessary input validation and parameterized query fixes. If you are running Roxy-WI on a Python environment, ensure your deployment uses the patched release and restart all affected services.

sudo dnf update roxy-wi-8.2.6.4 (or latest available)

Defensia detects this vulnerability

What an exploitation attempt looks like

Sample log line indicative of exploitation attempts:

POST|GET /haproxy/config.*server_ip=[^\s&]*(%27|union|select|drop|insert|update|delete|exec|script)[^\s&]*

WAF mitigation (if patching is not yet possible)

Add this rule to your WAF to block exploitation attempts while you schedule the patch. 

Implement a Web Application Firewall rule to block requests to /haproxy/config endpoints containing SQL keywords (UNION, SELECT, DROP, INSERT, UPDATE, DELETE) in the server_ip parameter. Enforce strict allowlist validation: server_ip should only match valid IPv4/IPv6 addresses and alphanumeric hostnames using the regex ^[a-zA-Z0-9][a-zA-Z0-9.-]*$ before routing to the backend.

How to check if you are affected

  1. Check installed Roxy-WI version: curl -s http://localhost:8080/api/version 2>/dev/null | grep -i version or review /opt/roxy-wi/app/__init__.py for __version__ string
  2. Verify the vulnerable haproxy_section_save function is present: grep -r 'haproxy_section_save' /opt/roxy-wi/app/routes/config/ and check if server_ip parameter is directly interpolated into SQL queries
  3. Search web server logs for SQL injection attempts targeting the haproxy config endpoint: grep -E 'server_ip.*(%27|union|select|drop|insert)' /var/log/nginx/access.log /var/log/apache2/access.log
  4. Confirm patch installation: python3 -c "import roxy_wi; print(roxy_wi.__version__)" should return 8.2.6.4 or later, and grep -A 5 'server_ip' /opt/roxy-wi/app/routes/config/routes.py should show parameterized query usage (e.g., using '?' placeholders)

FAQ

What is CVE-2026-33078?

CVE-2026-33078 is a critical SQL injection flaw in Roxy-WI's HAProxy configuration handler where the server_ip URL parameter bypasses input sanitization and is directly concatenated into database queries, allowing unauthenticated remote code execution at the database level.

Is CVE-2026-33078 being actively exploited?

According to CISA's Known Exploited Vulnerabilities catalog, CVE-2026-33078 is not currently listed as actively exploited in the wild. However, the low complexity and network accessibility of this vulnerability warrant immediate patching.

What versions of Roxy-WI are affected by CVE-2026-33078?

All Roxy-WI versions prior to 8.2.6.4 are vulnerable. The exact earliest affected version is not specified, but users should treat all releases before 8.2.6.4 as potentially compromised.

How do I check if my server is vulnerable to CVE-2026-33078?

Run `curl -s http://<roxy-wi-host>:8080/api/version | grep version` to confirm your version, or inspect `/opt/roxy-wi/app/__init__.py` for the version string. If the version is below 8.2.6.4, your instance is vulnerable.

Does Defensia detect CVE-2026-33078?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If Roxy-WI is installed on a monitored server, CVE-2026-33078 will appear in your dashboard with remediation steps.

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References

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