CVE-2026-11780: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in expresstech Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker
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.
AI Analysis
Technical Summary
CVE-2026-11780 is a stored Cross-Site Scripting vulnerability in the Quiz and Survey Master (QSM) WordPress plugin, affecting all versions up to 11.2.1. The flaw exists due to improper neutralization of input during web page generation, specifically in the 'question_title' parameter. Authenticated attackers with contributor-level privileges or above can inject arbitrary web scripts that execute in the context of users viewing the injected content. The vulnerability is classified under CWE-79 and has a CVSS 3.1 base score of 6.4, indicating medium severity.
Potential Impact
An attacker with contributor-level access or higher can exploit this vulnerability to inject malicious scripts into quiz or survey pages. These scripts execute in the browsers of users who access the affected pages, potentially leading to theft of session tokens, defacement, or other client-side impacts. The vulnerability does not affect availability but impacts confidentiality and integrity.
Mitigation Recommendations
No official patch or remediation has been confirmed as of the provided data. Users should monitor the vendor's advisory for updates. Until a fix is available, restrict contributor-level access to trusted users only and consider disabling or limiting the use of the 'question_title' input in quizzes and surveys. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
CVE-2026-11780: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in expresstech Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker
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.
CVSS v3.1
Score 6.4medium
Affected software
expresstech
Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-11780 is a stored Cross-Site Scripting vulnerability in the Quiz and Survey Master (QSM) WordPress plugin, affecting all versions up to 11.2.1. The flaw exists due to improper neutralization of input during web page generation, specifically in the 'question_title' parameter. Authenticated attackers with contributor-level privileges or above can inject arbitrary web scripts that execute in the context of users viewing the injected content. The vulnerability is classified under CWE-79 and has a CVSS 3.1 base score of 6.4, indicating medium severity.
Potential Impact
An attacker with contributor-level access or higher can exploit this vulnerability to inject malicious scripts into quiz or survey pages. These scripts execute in the browsers of users who access the affected pages, potentially leading to theft of session tokens, defacement, or other client-side impacts. The vulnerability does not affect availability but impacts confidentiality and integrity.
Mitigation Recommendations
No official patch or remediation has been confirmed as of the provided data. Users should monitor the vendor's advisory for updates. Until a fix is available, restrict contributor-level access to trusted users only and consider disabling or limiting the use of the 'question_title' input in quizzes and surveys. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-06-09T12:26:41.572Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a813f86bf8831d539784a5e
Added to database: 08/16/2026, 04:41:42 UTC
Last enriched: 08/23/2026, 13:01:12 UTC
Last updated: 10/01/2026, 05:08:50 UTC
Views: 33
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