PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-39538 Mikado-Themes CVE debrief

A high-severity vulnerability, CVE-2026-39538, was found in Mikado Core, a WordPress plugin. This PHP Local File Inclusion vulnerability has a CVSS score of 7.5 and could allow attackers to include local files, potentially leading to code execution. The vulnerability affects Mikado Core versions from n/a through 1.6. Users of Mikado Core, especially those with versions up to 1.6, should be aware of this vulnerability and take necessary actions to secure their installations. The vulnerability is classified as Improper Control of Filename for Include/Require Statement in PHP Program, also known as PHP Remote File Inclusion. The CVSS vector is CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating a high severity level. Given the high severity and potential impact, users should prioritize updating Mikado Core to a version beyond 1.6 if currently in use.

Vendor
Mikado-Themes
Product
Mikado Core
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-08
Original CVE updated
2026-07-24
Advisory published
2026-04-08
Advisory updated
2026-07-24

Who should care

Users of Mikado Core, especially those with versions up to 1.6, should be aware of this vulnerability and take necessary actions to secure their installations. This includes updating Mikado Core to a version beyond 1.6 if currently in use, reviewing and restricting file inclusion functionality in PHP configurations, and monitoring for any suspicious file inclusion attempts. The vulnerability has a high severity level, with a CVSS score of 7.5, and could allow attackers to include local files, potentially leading to code execution.

Technical summary

CVE-2026-39538 is an Improper Control of Filename for Include/Require Statement in PHP Program, also known as PHP Remote File Inclusion. The vulnerability affects Mikado Core versions from n/a through 1.6. The CVSS vector is CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating a high severity level. This vulnerability could allow attackers to include local files, potentially leading to code execution. Users should review the official CVE record and NVD details for further information.

Defensive priority

High priority should be given to updating Mikado Core to a version beyond 1.6 if currently in use. Additionally, users should review and restrict file inclusion functionality in PHP configurations and monitor for any suspicious file inclusion attempts.

Recommended defensive actions

  • Update Mikado Core to the latest version available.
  • Review and restrict file inclusion functionality in PHP configurations.
  • Monitor for any suspicious file inclusion attempts.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record was published on 2026-04-08T09:16:26.490Z and last modified on 2026-07-24T21:10:00.143Z. The NVD entry is currently Deferred. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the vendor. The CVE score is 7.5, indicating high severity. Users should review the official CVE record and NVD details for further information.

Official resources

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-04-08T09:16:26.490Z and has not been modified since then. The NVD entry is currently Deferred.