CVE-2026-9233
Quiz and Survey Master (QSM) <= 11.1.4 - Missing Authorization to Authenticated (Contributor+) Arbitrary Modification via qsm_insert_quiz_template AJAX Action
- Published
- Updated
- Reserved
- Assigned by
- Wordfence
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | Medium4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
| NVDNVD · Deferred | 3.1 | Medium4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.47% · top 59% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.
Weakness
Affected products
expresstech · Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker
- affected ≤ 11.1.4
References (12)
- https://www.wordfence.com/threat-intel/vulnerabilities/id/38db911b-cad5-4c8c-b0a4-70dc543b4591?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.2/php/admin/functions.php#L1557 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.2/php/admin/functions.php#L1563 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.2/php/admin/functions.php#L1638 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.2/php/admin/options-page-email-tab.php#L52 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.1.2/mlw_quizmaster2.php#L931 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/admin/functions.php#L1557 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/admin/functions.php#L1563 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/admin/functions.php#L1638 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/php/admin/options-page-email-tab.php#L52 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/11.0.0/mlw_quizmaster2.php#L931 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3570062%40quiz-master-next&new=3570062%40quiz-master-next&sfp_email=&sfph_mail= (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-9233)Record last updated .