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CVE-2026-5293

27
FAUCET Score

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.

First published: May 20, 2026Last modified: May 20, 2026

Impacted Technologies

VendorProductVersion(s)CPE
Olivesystem診断ジェネレータ作成プラグイン
>= 0, <= 1.4.16CNA affecteddefault unaffected

CVSS Data

CVSS version used by this source: 3.1

6.4MEDIUM

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 Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.1
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.31%
Probability of exploitation in next 30 days
EPSS Percentile
23.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0031 is in the 30th percentile among its peer group of 21,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

plugins.trac.wordpress.org / browser/os-diagnosis-generator/tags/1.4.16/class/themeClass.php
plugins.trac.wordpress.org / browser/os-diagnosis-generator/tags/1.4.16/class/themeClass.php
plugins.trac.wordpress.org / browser/os-diagnosis-generator/tags/1.4.16/diagnosisAdminClass.php
plugins.trac.wordpress.org / browser/os-diagnosis-generator/tags/1.4.16/include_files/user-viewFormPage.php
plugins.trac.wordpress.org / browser/os-diagnosis-generator/trunk/class/themeClass.php
plugins.trac.wordpress.org / browser/os-diagnosis-generator/trunk/class/themeClass.php
plugins.trac.wordpress.org / browser/os-diagnosis-generator/trunk/diagnosisAdminClass.php
plugins.trac.wordpress.org / browser/os-diagnosis-generator/trunk/include_files/user-viewFormPage.php
wordfence.com / threat-intel/vulnerabilities/id/c5293c0f-90b0-41df-a623-90297d998c41