Stored Cross-Site Scripting Vulnerability in Quiz and Survey Master Plugin for WordPress
CVE-2026-11780

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Quiz And Survey Master (qsm) – Quiz Maker & Survey Maker
Vendor
CVE Published:
16 August 2026

What is CVE-2026-11780?

The Quiz and Survey Master (QSM) plugin for WordPress is susceptible to stored cross-site scripting through the 'question_title' parameter. This vulnerability arises from inadequate input sanitization and output escaping, allowing authenticated users with contributor-level access or higher to inject malicious web scripts. These scripts can execute within the pages whenever a user accesses the compromised content, potentially leading to a range of harmful outcomes.

Affected Version(s)

Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker 0 <= 11.2.1

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/quiz-master-ne...
https://plugins.trac.wordpress.org/browser/quiz-master-ne...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jonah Burgess (CryptoCat)
.