CVE-2026-13767 json
Quiz and Survey Master (QSM) <= 11.2.0 - Authenticated (Custom+) SQL Injection via 'pages' Parameter
published 2026-07-16 3 mo ago modified 2026-07-16 3 mo ago also EUVD-2026-44885
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 35%
- public exploits
- 0
- none known
Summary
The Quiz Master Next plugin for WordPress is vulnerable to SQL Injection via stored quiz page data in versions up to, and including, 11.2.0. This is due to insufficient escaping on the user-supplied 'pages' parameter persisted by the qsm_ajax_save_pages() AJAX handler (sanitize_text_field only) and lack of sufficient preparation on the existing SQL query built in qsm_options_questions_tab_content() at line 143, where the stored page IDs are interpolated into an IN() clause via implode() with no $wpdb->prepare() and no integer casting. This makes it possible for authenticated attackers, with Author-level access and above (who can own a quiz they are entitled to edit), to plant a SQL payload that is executed second-order whenever any user (including an administrator) views the quiz's Questions tab, allowing them to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3 mo ago
Exploit prediction
0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected products
- expresstech Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker
Classification
- Weakness
-
- CWE-89 Improper Neutralization of Special Elements used in an SQL Command
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/63fec549-09e0-4d4e-ae41-128ce0669501?source=cve
- plugins.trac.wordpress.org /browser/quiz-master-next/tags/11.2.0/php/admin/options-page-questions-tab.php#L143
- plugins.trac.wordpress.org /browser/quiz-master-next/tags/11.2.0/php/admin/options-page-questions-tab.php#L1085
- plugins.trac.wordpress.org /browser/quiz-master-next/tags/11.2.0/php/classes/class-qmn-plugin-helper.php#L601
- plugins.trac.wordpress.org /changeset?reponame=&old=3608310%40quiz-master-next&new=3608310%40quiz-master-next
Sources
- CVE List CVE-2026-13767
- NVD CVE-2026-13767
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.