Vulnerabilities / Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker / WPSEC-2026-0463
Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker <= 11.2.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Question Length Settings
Medium 6.4
CWE-79Fixed in 11.2.8
- ID
- WPSEC-2026-0463
- Plugin
- Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker (quiz-master-next)
- Affected
- all versions before 11.2.8
- Remediation
- Update to 11.2.8 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-06
- Attack surface
- Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker on WPSec AttackSurface
- Fix released
- Published
Description
The Quiz and Survey Master (QSM) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'min_text_length', 'limit_text' and 'limit_multiple_response' question settings in all versions up to, and including, 11.2.7 due to insufficient input sanitization and output escaping. These values were stored verbatim and concatenated unquoted into HTML attributes in question templates. 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 affected quiz.
References
- https://wpsec.com/vuln/WPSEC-2026-0463/
- https://plugins.svn.wordpress.org/quiz-master-next/tags/11.2.8/
- https://wordpress.org/plugins/quiz-master-next/
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