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CVE-2026-66670 – Unauthenticated Local File Inclusion – Måne WordPress Theme ≤ 1.7

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Summary

CVE-2026-66670 is an unauthenticated Local File Inclusion (LFI) vulnerability affecting the Måne WordPress theme (developed by Elated-Themes), versions 1.7 and earlier. The flaw allows a remote, unauthenticated attacker to force the theme to include arbitrary local files via improper control of a filename parameter passed to a PHP include/require statement. The issue carries a CVSS v3.1 base score of 8.1 (High).

Technical details

  • Root cause: The theme fails to properly sanitize/validate a user-controllable filename parameter before passing it to a PHP file-inclusion function (include/require or equivalent), classified as CWE-98 (Improper Control of Filename for Include/Require Statement in PHP Program).
  • Trigger conditions: An attacker sends a crafted HTTP request to the WordPress site with a manipulated filename/path parameter; no authentication or user interaction is required.
  • Attack vector: Network-based (AV:N), with high attack complexity (AC:H), no privileges required (PR:N), and no user interaction (UI:N).
  • Impact: Successful exploitation can result in disclosure of arbitrary local files, and depending on server configuration, may enable inclusion of attacker-controlled files leading to remote code execution, full compromise of confidentiality, integrity, and availability of the affected site.

Affected software

  • Elated-Themes Måne WordPress theme, versions 1.7 and earlier

Severity

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

Mitigation and recommended actions

  • Immediate: Upgrade the Måne theme to a version newer than 1.7 as soon as the vendor makes a fixed release available. At the time of writing, no vendor-confirmed patched version has been publicly identified.
  • If no patch is available:
    • Restrict or disable public access to the affected theme’s file-inclusion functionality via a web application firewall (WAF) rule blocking directory traversal / path manipulation patterns in requests.
    • Review server PHP configuration to disable allow_url_include and harden open_basedir restrictions to limit the impact of any inclusion attempt.
    • Monitor web server logs for anomalous requests containing path traversal sequences (e.g., ../) or unexpected file parameters targeting the theme.
    • Consider temporarily deactivating the Måne theme on internet-facing WordPress sites until a fix is confirmed and applied.

References

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