CVE-2026-116509 json
Quiz and Survey Master (QSM) <= 11.2.9 - Authenticated (Contributor+) SQL Injection via 'qpages' Parameter
published 2d ago modified yesterday also EUVD-2026-124989
- 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 38%
- public exploits
- 0
- none known
Summary
The Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker plugin for WordPress is vulnerable to generic SQL Injection via the 'qpages' parameter in all versions up to, and including, 11.2.9 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. 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. The injected payload survives storage and a published-status check in display_shortcode() because a non-numeric ID causes the isPublished lookup to return an empty string, after which the payload is imploded directly into a WHERE question_id IN() clause via plain string interpolation with no wpdb->prepare() or esc_sql() call.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- yesterday
Exploit prediction
0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-14).
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/cbca9065-6f0a-4fb3-ba54-ebd8a7c44af1?source=cve
- plugins.trac.wordpress.org /browser/quiz-master-next/tags/11.2.9/php/classes/class-qmn-quiz-manager.php#L688
- plugins.trac.wordpress.org /browser/quiz-master-next/tags/11.2.9/php/admin/options-page-questions-tab.php#L1187
- plugins.trac.wordpress.org /browser/quiz-master-next/tags/11.2.9/php/admin/options-page-questions-tab.php#L1193
- plugins.trac.wordpress.org /browser/quiz-master-next/tags/11.2.9/php/admin/options-page-questions-tab.php#L1209
- plugins.trac.wordpress.org /browser/quiz-master-next/tags/11.2.9/php/admin/functions.php#L1135
- plugins.trac.wordpress.org /changeset?reponame=&old=3779826%40quiz-master-next&new=3779826%40quiz-master-next
Sources
- CVE List CVE-2026-116509
- NVD CVE-2026-116509
Fencer Intel 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.