Quiz and Survey Master question titles permit Contributor stored XSS

Quiz and Survey Master through 11.2.1 does not adequately sanitize and escape the Contributor-controlled question_title value. An attacker can store a script payload in quiz content, and it executes when a user views the affected quiz or management page. The public.

CVE / CNA score 6.4 CVSS 3.1 · security@wordfence.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker
Plugin slug: quiz-master-next
Affected: <= 11.2.1
Safe version: See mitigation notes
Published: Aug 16, 2026
Weakness: CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Aug 16, 2026 and is one of 48 known issues for this plugin.

What to do

Update, patch or deactivate.

No fixed release is identified in the authoritative record. Update when a confirmed patch is available; until then, restrict Contributors or delegated quiz authors, review question titles, and invalidate privileged sessions if malicious content was viewed. The official upstream changelog lists version 11.2.4, which is newer than the published affected range. Its changelog does not clearly confirm this specific fix, so it is not counted as a known-safe release.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'question_title' parameter in all versions up to, and including, 11.2.1 due to insufficient input sanitization and output escaping. 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 injected page.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

References

Primary and upstream sources

Data attribution: This product uses the NVD API but is not endorsed or certified by the NVD.

Vulnerability data licensing

CVE. Copyright © 1999–2026, The MITRE Corporation. MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

CWE. Copyright © 2006–2026, The MITRE Corporation. CWE™ is free to use by any organization or individual for any research, development, and/or commercial purposes, per these CWE Terms of Use. Accordingly, The MITRE Corporation hereby grants you a non-exclusive, royalty-free license to use CWE for research, development, and commercial purposes. Any copy you make for such purposes is authorized on the condition that you reproduce MITRE’s copyright designation and this license in any such copy.

CVSS. CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and used by permission.

Source-record text is CVE/CNA content delivered through the NVD API. Fused summaries and remediation guidance are independently authored and are not attributed to NVD.

All other copyrights and trademarks are the property of their respective owners.

Full data sources, terms, and disclaimers