# Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker <= 11.2.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Question Length Settings

- **ID:** WPSEC-2026-0463
- **Plugin:** Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker (`quiz-master-next`), https://wordpress.org/plugins/quiz-master-next/
- **Affected versions:** all versions before 11.2.8
- **Fixed in:** 11.2.8 (Update to 11.2.8 or later.)
- **Severity:** Medium 6.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-79
- **Usage among sites WPSec scans:** plugin Medium, affected versions Medium (as of 2026-10-06)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/quiz-master-next
- **Fix released:** 2026-10-05
- **Published:** 2026-10-06
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0463/

## 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/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0463/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.