CVE-2026-5293

MEDIUM EPSS 22.5%
Published May 20, 20261mo ago · Modified Jun 17, 20262w ago
6.4 CVSS 3.1
Medium
Find Similar
Published May 20, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.4
Exploitability
3.1
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
22.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

References 9

  • 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
  • wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/c5293c0f-90b0-41df-a623-90297d998c41?source=cve

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.