Developers Italia Design Scuole Italia Plugin up to 2.18.1 functions.php reserved_file_check path traversal

Summaryinfo

A vulnerability has been found in Developers Italia Design Scuole Italia Plugin up to 2.18.1 and classified as problematic. The affected element is the function reserved_file_check of the file functions.php. The manipulation leads to path traversal. This vulnerability is uniquely identified as CVE-2026-87791. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Developers Italia Design Scuole Italia Plugin up to 2.18.1 and classified as problematic. This issue affects the function reserved_file_check of the file functions.php. The manipulation 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. The summary by CVE is:

A path traversal vulnerability exists in the reserved_file_check function of the functions.php file in the WordPress Design Scuole Italia theme. The vulnerability allows an unauthenticated attacker to download arbitrary files accessible by the web server process.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-87791 since 09/09/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/15/2026). The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

By approaching the search of inurl:functions.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Developers Italia

Name

• Design Scuole Italia Plugin

Version

• 2.18.0
• 2.18.1

CPE 2.3info

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CPE 2.2info

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