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CVE-2026-78562 – Unauthenticated Local File Inclusion – Verdure Core WordPress Plugin (≤ 1.2)

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Summary

CVE-2026-78562 is a Local File Inclusion (LFI) vulnerability in the Verdure Core WordPress plugin (developed by Mikado-Themes), affecting all versions up to and including 1.2. The flaw allows unauthenticated, remote attackers to include and execute arbitrary files on the web server, potentially leading to full remote code execution. The vulnerability has a CVSS v3.1 base score of 8.1 (High).

Technical details

  • Root cause: The plugin fails to properly sanitize or restrict a user-supplied filename parameter that is passed into a PHP include/require statement (CWE-98: Improper Control of Filename for Include/Require Statement in PHP Program).
  • Trigger conditions: No authentication is required to exploit the vulnerability; an attacker only needs network access to a vulnerable WordPress site running the affected plugin.
  • Attack vector: Network-based (AV:N), with high attack complexity (AC:H), no privileges required (PR:N), and no user interaction required (UI:N).
  • Impact: Successful exploitation allows attackers to include and execute arbitrary PHP files on the server. This can be leveraged to bypass access controls, disclose sensitive data, or achieve remote code execution — particularly in environments where "safe" file types such as images can be uploaded and subsequently included by the vulnerable code path. The CVSS impact metrics (C:H/I:H/A:H) reflect complete loss of confidentiality, integrity, and availability.

Affected software

  • Product: Verdure Core (WordPress plugin)
  • Vendor: Mikado-Themes
  • Affected versions: All versions up to and including 1.2

Severity

  • CVSS v3.1 Base Score: 8.1 (High)
  • Vector String: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Mitigation and recommended actions

  • Immediate: At the time of publication, no patched version of Verdure Core has been identified. Security teams should check for and apply any update from Mikado-Themes as soon as it becomes available and monitor the vendor’s release channel for a fixed build beyond 1.2.
  • If no patch is available:
    • Restrict or disable the Verdure Core plugin until a fix is released if the site does not require its functionality.
    • Deploy a Web Application Firewall (WAF) rule to block requests attempting to manipulate file-inclusion parameters (e.g., path traversal sequences such as ../, PHP wrapper prefixes like php://, or unexpected file extensions in relevant request parameters).
    • Audit upload directories and disable execution of PHP within upload/media directories (e.g., via web server configuration) to reduce the impact of file-inclusion attacks that leverage uploaded "safe" file types.
    • Review server and application logs for anomalous requests referencing unexpected file paths or parameters associated with the plugin.
    • Limit exposure of the WordPress admin/plugin infrastructure to trusted networks where feasible until remediation is confirmed.

References

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