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.
History

Wed, 20 May 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 20 May 2026 11:45:00 +0000

Type Values Removed Values Added
First Time appeared Olivesystem
Olivesystem 診断ジェネレータ作成プラグイン
Wordpress
Wordpress wordpress
Vendors & Products Olivesystem
Olivesystem 診断ジェネレータ作成プラグイン
Wordpress
Wordpress wordpress

Wed, 20 May 2026 02:15:00 +0000

Type Values Removed Values Added
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.
Title 診断ジェネレータ作成プラグイン <= 1.4.16 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'js' Parameter
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-05-20T13:03:00.373Z

Reserved: 2026-03-31T20:22:03.814Z

Link: CVE-2026-5293

cve-icon Vulnrichment

Updated: 2026-05-20T13:02:56.973Z

cve-icon NVD

Status : Deferred

Published: 2026-05-20T02:16:37.053

Modified: 2026-05-20T13:54:54.890

Link: CVE-2026-5293

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-20T10:38:19Z