FKIE_CVE-2026-5293
Vulnerability from fkie_nvd - Published: 2026-05-20 02:16 - Updated: 2026-06-17 10:58
Severity
Summary
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.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "\u8a3a\u65ad\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u4f5c\u6210\u30d7\u30e9\u30b0\u30a4\u30f3",
"vendor": "olivesystem",
"versions": [
{
"lessThanOrEqual": "1.4.16",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"source": "security@wordfence.com"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The \u8a3a\u65ad\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u4f5c\u6210\u30d7\u30e9\u30b0\u30a4\u30f3 (Diagnosis Generator) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the \u0027js\u0027 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 \u0027admin_init\u0027 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\u0027s 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."
}
],
"id": "CVE-2026-5293",
"lastModified": "2026-06-17T10:58:46.210",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.1,
"impactScore": 2.7,
"source": "security@wordfence.com",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-5293",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-20T13:02:53.790036Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-05-20T02:16:37.053",
"references": [
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/tags/1.4.16/class/themeClass.php#L26"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/tags/1.4.16/class/themeClass.php#L39"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/tags/1.4.16/diagnosisAdminClass.php#L409"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/tags/1.4.16/include_files/user-viewFormPage.php#L102"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/trunk/class/themeClass.php#L26"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/trunk/class/themeClass.php#L39"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/trunk/diagnosisAdminClass.php#L409"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/os-diagnosis-generator/trunk/include_files/user-viewFormPage.php#L102"
},
{
"source": "security@wordfence.com",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c5293c0f-90b0-41df-a623-90297d998c41?source=cve"
}
],
"sourceIdentifier": "security@wordfence.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-79"
}
],
"source": "security@wordfence.com",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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