Roxy-WI up to 8.2.6.3 haproxy_section_save oldconfig path traversal

Summaryinfo

A vulnerability described as critical has been identified in Roxy-WI. This vulnerability affects the function haproxy_section_save. Such manipulation of the argument oldconfig leads to path traversal. This vulnerability is uniquely identified as CVE-2026-33077. The attack can be launched remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Roxy-WI. It has been rated as critical. Affected by this issue is the function haproxy_section_save. The manipulation of the argument oldconfig with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. CVE summarizes:

Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. Prior to version 8.2.6.4, the oldconfig parameter in the haproxy_section_save interface has an arbitrary file read vulnerability. Version 8.2.6.4 fixes the issue.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-33077 since 03/17/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

It is declared as proof-of-concept.

Upgrading to version 8.2.6.4 eliminates this vulnerability. Applying the patch aecc7971959092fa93e93531f1ffcde33524b031 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-25376). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• Roxy-WI

Version

• 6.1.1.0
• 6.3.5.0
• 6.3.6.0
• 6.3.9.0
• 8.1.4
• 8.2.6.3

License

• open-source

Website

• Product: https://github.com/roxy-wi/roxy-wi/

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Once again VulDB remains the best source for vulnerability data.

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