Roxy-WI up to 8.1.4 Template String /config/compare///show command injection

Summaryinfo

A vulnerability, which was classified as critical, has been found in Roxy-WI. Affected by this issue is some unknown functionality of the file /config/compare///show of the component Template String Handler. Performing a manipulation results in command injection. This vulnerability is cataloged as CVE-2026-27811. It is possible to initiate the attack remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Roxy-WI. It has been classified as critical. This affects an unknown functionality of the file /config/compare///show of the component Template String Handler. The manipulation with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. Prior to version 8.2.6.3, a command injection vulnerability exists in the `/config/compare/<service>/<server_ip>/show` endpoint, allowed authenticated users to execute arbitrary system commands on the app host. The vulnerability exists in `app/modules/config/config.py` on line 362, where user input is directly formatted in the template string that is eventually executed. Version 8.2.6.3 fixes the issue.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-27811 since 02/24/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

Upgrading to version 8.2.6.3 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch a10ac7306c252014f97a7213db4a9470300fa064 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 CNNVD (CNNVD-202603-3353). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• Roxy-WI

Version

• 6.1.1.0
• 6.3.5.0
• 6.3.6.0
• 6.3.9.0
• 8.1.4

License

• open-source

Website

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

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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