CVE-2026-5293
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
- 6.4MediumCVSS base score
- 0.31%Exploitation in 30 daysEPSS · top 76% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Wordfence
- 50 days later
· 50 days later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | Medium6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
| NVDNVD · Deferred | 3.1 | Medium6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.31% · top 76% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.4.
Affected products
- affected ≤ 1.4.16
References
References9
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c5293c0f-90b0-41df-a623-90297d998c41?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/trunk/diagnosisAdminClass.php#L409 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/tags/1.4.16/diagnosisAdminClass.php#L409 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/trunk/class/themeClass.php#L26 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/tags/1.4.16/class/themeClass.php#L26 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/trunk/class/themeClass.php#L39 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/tags/1.4.16/class/themeClass.php#L39 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/trunk/include_files/user-viewFormPage.php#L102 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/tags/1.4.16/include_files/user-viewFormPage.php#L102 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-31034 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-5293)Record last updated .