EUVD-2026-25073Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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 Vendor (VulnCheck) · only source for this CVE.
CVSS VectorVendor: VulnCheck
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/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
6DescriptionCVE.org
Xerte Online Toolkits versions 3.15 and earlier contain an information disclosure vulnerability that allows unauthenticated attackers to retrieve the full server-side filesystem path of the application root. Attackers can send a GET request to the /setup page to access the exposed root_path value rendered in the HTML response, which enables exploitation of path-dependent vulnerabilities such as relative path traversal in connector.php.
AnalysisAI
Xerte Online Toolkits versions 3.15 and earlier expose the server-side filesystem root path through an unauthenticated GET request to the /setup page, allowing remote attackers to retrieve sensitive path information rendered in HTML responses. This information disclosure enables exploitation of path-dependent vulnerabilities such as relative path traversal in connector.php, potentially leading to unauthorized file access or further system compromise.
Technical ContextAI
Xerte Online Toolkits is a PHP-based learning content authoring platform. The vulnerability exists in the /setup page endpoint, which fails to restrict access or sanitize output of the root_path variable. The exposed root_path value is rendered directly into the HTML response, making it accessible to any unauthenticated network client. This path information becomes a critical prerequisite for exploiting relative path traversal flaws in connector.php and other file-handling components that depend on accurate path calculation. The root cause is classified under CWE-497 (Exposure of System Data to an Unauthorized Control Sphere), a variant of information disclosure where sensitive system information is exposed without proper access controls.
RemediationAI
Upgrade Xerte Online Toolkits to a patched version released after commit f063e942b4a9bf77a06829e844c2c70316bc45e8 (https://github.com/thexerteproject/xerteonlinetoolkits/commit/f063e942b4a9bf77a06829e844c2c70316bc45e8). The patch removes or restricts the exposure of the root_path variable in the /setup page response. As an interim workaround pending patch deployment, administrators can restrict network access to the /setup endpoint using web server configuration (Apache .htaccess or nginx location blocks) to limit exposure to trusted administrative IP ranges, or remove the /setup page from production environments after initial installation and configuration are complete. Additionally, implement relative path access controls in connector.php to reduce the impact of path disclosure, such as using absolute paths and validating file access against a whitelist of permitted directories. Verify that the patched version is deployed in a staging environment and tested before production rollout.
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External POC / Exploit Code
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