EUVD-2026-23966Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
7DescriptionGitHub Advisory
Roxy-WI is a web interface for managing Haproxy, Nginx, Apache and Keepalived servers. Prior to version 8.2.6.4, the POST /config/<service>/show API endpoint accepts a configver parameter that is directly appended to a base directory path to construct a local file path, which is subsequently opened and its contents returned to the caller. The existing path traversal guard only inspects the base directory variable (which is never user-controlled) and entirely ignores the user-supplied configver value. An authenticated attacker can supply a configver value containing ../ sequences to escape the intended directory and read arbitrary files accessible to the web application process. Version 8.2.6.4 contains a patch for the issue.
AnalysisAI
Roxy-WI versions prior to 8.2.6.4 allow authenticated attackers to read arbitrary files via path traversal in the POST /config/<service>/show API endpoint. The configver parameter is directly concatenated into a file path without proper validation, permitting directory escape sequences (../) to bypass the existing path guard. An authenticated user can exploit this to access sensitive configuration files and other data readable by the web application process.
Technical ContextAI
Roxy-WI is a web interface for managing multiple load-balancing and service platforms (HAProxy, Nginx, Apache, Keepalived). The vulnerable endpoint constructs a local file path by appending user-supplied input (configver) to a base directory path and then opens and returns the file contents. The root cause (CWE-24: Path Traversal) stems from incomplete input validation-the application checks the base directory variable for traversal sequences but fails to sanitize the user-controlled configver parameter before path construction. This is a classic concatenation-then-validate logic flaw where the attacker can inject ../ sequences into configver to escape the intended directory scope.
RemediationAI
Vendor-released patch: upgrade Roxy-WI to version 8.2.6.4 or later. The fix is confirmed in the upstream repository commit d4d100067dd0ee04317f05d3b51be8fcfdc3f802 (https://github.com/roxy-wi/roxy-wi/commit/d4d100067dd0ee04317f05d3b51be8fcfdc3f802), which implements proper input validation on the configver parameter to reject or neutralize path traversal sequences. If immediate patching is not feasible, implement a network-level compensating control: restrict POST requests to /config/*/show to a whitelist of trusted internal IP addresses or require an additional authentication layer (e.g., IP-based ACL via reverse proxy). This mitigates the risk by limiting exposure to authenticated users within a controlled network perimeter. Note that this workaround does not eliminate the vulnerability for legitimate internal users and should be treated as temporary.
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Same weakness CWE-24 – Path Traversal: '../filedir'
View allSame technique Path Traversal
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External POC / Exploit Code
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