CVE-2026-9233 (GCVE-0-2026-9233)
Vulnerability from cvelistv5 – Published: 2026-06-27 06:50 – Updated: 2026-06-27 06:50
VLAI
Title
Quiz and Survey Master (QSM) <= 11.1.4 - Missing Authorization to Authenticated (Contributor+) Arbitrary Modification via qsm_insert_quiz_template AJAX Action
Summary
The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 11.1.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to create, modify, and delete quiz output templates stored in the mlw_quiz_output_templates database table, including storing unsanitized HTML content such as arbitrary script tags.
Severity
4.3 (Medium)
CWE
- CWE-862 - Missing Authorization
Assigner
References
12 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| expresstech | Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker |
Affected:
0 , ≤ 11.1.4
(semver)
|
Credits
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Quiz and Survey Master (QSM) \u2013 Easy Quiz and Survey Maker",
"vendor": "expresstech",
"versions": [
{
"lessThanOrEqual": "11.1.4",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Weerawat Pawanawiwat (ErbaZZ)"
}
],
"descriptions": [
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"lang": "en",
"value": "The Quiz and Survey Master (QSM) \u2013 Easy Quiz and Survey Maker plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 11.1.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to create, modify, and delete quiz output templates stored in the mlw_quiz_output_templates database table, including storing unsanitized HTML content such as arbitrary script tags."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"description": "CWE-862 Missing Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-27T06:50:57.158Z",
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence"
},
"references": [
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/38db911b-cad5-4c8c-b0a4-70dc543b4591?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.2/php/admin/functions.php#L1557"
},
{
"url": "https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.2/php/admin/functions.php#L1563"
},
{
"url": "https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.2/php/admin/functions.php#L1638"
},
{
"url": "https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.2/php/admin/options-page-email-tab.php#L52"
},
{
"url": "https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.2/mlw_quizmaster2.php#L931"
},
{
"url": "https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/admin/functions.php#L1557"
},
{
"url": "https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/admin/functions.php#L1563"
},
{
"url": "https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/admin/functions.php#L1638"
},
{
"url": "https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/admin/options-page-email-tab.php#L52"
},
{
"url": "https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/mlw_quizmaster2.php#L931"
},
{
"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3570062%40quiz-master-next\u0026new=3570062%40quiz-master-next\u0026sfp_email=\u0026sfph_mail="
}
],
"timeline": [
{
"lang": "en",
"time": "2026-06-26T17:57:43.000Z",
"value": "Disclosed"
}
],
"title": "Quiz and Survey Master (QSM) \u003c= 11.1.4 - Missing Authorization to Authenticated (Contributor+) Arbitrary Modification via qsm_insert_quiz_template AJAX Action"
}
},
"cveMetadata": {
"assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"assignerShortName": "Wordfence",
"cveId": "CVE-2026-9233",
"datePublished": "2026-06-27T06:50:57.158Z",
"dateReserved": "2026-05-21T18:39:37.842Z",
"dateUpdated": "2026-06-27T06:50:57.158Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-9233",
"date": "2026-06-27",
"epss": "0.00272",
"percentile": "0.18953"
}
}
}
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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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