The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'question_title' parameter in all versions up to, and including, 11.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

No data.

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Vendors Products
References
Link Providers
https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/admin/options-page-questions-tab.php#L1557 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/admin/options-page-questions-tab.php#L1580 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/rest-api.php#L301 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/rest-api.php#L741 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.4/php/admin/options-page-questions-tab.php#L1557 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.4/php/admin/options-page-questions-tab.php#L1580 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.4/php/rest-api.php#L301 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.4/php/rest-api.php#L741 cve-icon cve-icon
https://plugins.trac.wordpress.org/changeset?reponame=&old=3609172%40quiz-master-next&new=3609172%40quiz-master-next cve-icon cve-icon
https://plugins.trac.wordpress.org/changeset?reponame=&old=3612474%40quiz-master-next&new=3612474%40quiz-master-next cve-icon cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/66334c29-c9d6-48b0-8d6b-bae588da0331?source=cve cve-icon cve-icon
History

Sun, 16 Aug 2026 04:45:00 +0000

Type Values Removed Values Added
Description The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'question_title' parameter in all versions up to, and including, 11.2.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Title Quiz and Survey Master (QSM) <= 11.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'question_title' Parameter
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-08-16T04:24:53.383Z

Reserved: 2026-06-09T12:26:41.572Z

Link: CVE-2026-11780

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-16T05:16:45.643

Modified: 2026-08-16T05:16:45.643

Link: CVE-2026-11780

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-16T05:30:06Z