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CVE-2026-87791 – Unauthenticated Arbitrary File Download (Path Traversal) – Design Scuole Italia Wor

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Summary

CVE-2026-87791 is a path traversal vulnerability in the reserved_file_check function of the Design Scuole Italia WordPress theme, developed by Developers Italia. The flaw allows unauthenticated remote attackers to download arbitrary files accessible to the web server process. It carries a HIGH severity rating with a CVSS score of 8.7.

Technical details

  • Root cause: the reserved_file_check function fails to properly sanitize or restrict file paths supplied via user input, permitting directory traversal sequences to reach files outside the intended directory.
  • Trigger conditions: no authentication is required; an attacker only needs network access to the vulnerable WordPress site running the affected theme.
  • Attack vector: network-based, remotely exploitable without user interaction or privileges.
  • Impact: disclosure/download of arbitrary files readable by the web server process, which may include configuration files (e.g., wp-config.php), credentials, or other sensitive data, potentially enabling further compromise of the site.

Affected software

  • Design Scuole Italia WordPress Theme (design-scuole-wordpress-theme) by Developers Italia, versions 2.6.0 through 2.18.1

Severity

  • CVSS Score: 8.7 (High)
  • CVSS Vector (v4.0): CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Mitigation and recommended actions

  • Immediate: upgrade Design Scuole Italia WordPress Theme to version 2.18.2 or later, which contains the fix for this issue.
  • If no patch can be applied immediately: restrict or monitor unauthenticated access to the theme’s file-handling endpoints, and review web server access logs for path traversal patterns (e.g., ../ sequences) targeting the site.

References

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