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.

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.

The EPSS score is 0.00307.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
expresstech Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker unaffected
Version Status Constraints
0 affected ≤ 11.2.1

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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'}

Projects

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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

Weaknesses