FKIE_CVE-2026-2412
Vulnerability from fkie_nvd - Published: 2026-03-23 23:17 - Updated: 2026-04-24 16:32
Severity ?
Summary
The Quiz and Survey Master (QSM) plugin for WordPress is vulnerable to SQL Injection via the 'merged_question' parameter in all versions up to, and including, 10.3.5. This is due to insufficient sanitization of user-supplied input before being used in a SQL query. The sanitize_text_field() function applied to the merged_question parameter does not prevent SQL metacharacters like ), OR, AND, and # from being included in the value, which is then directly concatenated into a SQL IN() clause without using $wpdb->prepare() or casting values to integers. This makes it possible for authenticated attackers, with Contributor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The Quiz and Survey Master (QSM) plugin for WordPress is vulnerable to SQL Injection via the \u0027merged_question\u0027 parameter in all versions up to, and including, 10.3.5. This is due to insufficient sanitization of user-supplied input before being used in a SQL query. The sanitize_text_field() function applied to the merged_question parameter does not prevent SQL metacharacters like ), OR, AND, and # from being included in the value, which is then directly concatenated into a SQL IN() clause without using $wpdb-\u003eprepare() or casting values to integers. This makes it possible for authenticated attackers, with Contributor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database."
},
{
"lang": "es",
"value": "El plugin Quiz and Survey Master (QSM) para WordPress es vulnerable a inyecci\u00f3n SQL a trav\u00e9s del par\u00e1metro \u0027merged_question\u0027 en todas las versiones hasta la 10.3.5, inclusive. Esto se debe a una sanitizaci\u00f3n insuficiente de la entrada proporcionada por el usuario antes de ser utilizada en una consulta SQL. La funci\u00f3n sanitize_text_field() aplicada al par\u00e1metro merged_question no evita que metacaracteres SQL como ), OR, AND y # se incluyan en el valor, el cual es luego concatenado directamente en una cl\u00e1usula SQL IN() sin usar $wpdb-\u0026gt;prepare() ni convertir valores a enteros. Esto hace posible que atacantes autenticados, con acceso de nivel Colaborador y superior, a\u00f1adan consultas SQL adicionales en consultas ya existentes que pueden ser utilizadas para extraer informaci\u00f3n sensible de la base de datos."
}
],
"id": "CVE-2026-2412",
"lastModified": "2026-04-24T16:32:53.997",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.8,
"impactScore": 3.6,
"source": "security@wordfence.com",
"type": "Secondary"
}
]
},
"published": "2026-03-23T23:17:11.287",
"references": [
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.3.5/php/classes/class-qsm-questions.php#L387"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.3.5/php/rest-api.php#L760"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/changeset/3486710/quiz-master-next/trunk/php/classes/class-qsm-questions.php"
},
{
"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/changeset/3486710/quiz-master-next/trunk/php/rest-api.php"
},
{
"source": "security@wordfence.com",
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b32bf1cb-3722-41fc-be51-dabe80416b14?source=cve"
}
],
"sourceIdentifier": "security@wordfence.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-89"
}
],
"source": "security@wordfence.com",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
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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