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CVE-2026-5293

MEDIUM 6.4 CVSS 3.1
Published
May 20, 2026
Last modified
July 24, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

The 診断ジェネレータ作成プラグイン (Diagnosis Generator) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'js' parameter in versions up to and including 1.4.16. This is due to missing authorization checks and insufficient input sanitization in the themeFunc() function. The function is hooked to 'admin_init' and processes theme update requests without verifying user capabilities, allowing any authenticated user (including subscribers) to save malicious JavaScript to theme files. Additionally, the save() function uses stripslashes() which removes WordPress's magic quotes protection. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in theme files that will execute whenever a user accesses a page containing the diagnosis form shortcode.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • olivesystem 診断ジェネレータ作成プラグイン — Up to and including 1.4.16

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/tags/1.4.16/class/themeClass.php#L26
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/tags/1.4.16/class/themeClass.php#L39
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/tags/1.4.16/diagnosisAdminClass.php#L409
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/tags/1.4.16/include_files/user-viewFormPage.php#L102
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/trunk/class/themeClass.php#L26
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/trunk/class/themeClass.php#L39
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/trunk/diagnosisAdminClass.php#L409
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/trunk/include_files/user-viewFormPage.php#L102
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/c5293c0f-90b0-41df-a623-90297d998c41?source=cve
  • nvd.nist.gov Official NVD record