CVE-2026-96558 (GCVE-0-2026-96558)

Vulnerability from cvelistv5 – Published: 2026-10-10 06:40 – Updated: 2026-10-10 06:40
VLAI
Title
Quiz and Survey Master (QSM) <= 11.2.6 - Unauthenticated Stored DOM-Based Cross-Site Scripting via 'qsm_hidden_questions' Parameter
Summary
The Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'qsm_hidden_questions' parameter in all versions up to, and including, 11.2.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the attacker to force the mlw_results INSERT to fail by submitting an over-length or duplicate qsm_unique_key value, which triggers the audit trail code branch that writes the unescaped payload to wp_mlw_qm_audit_trail.form_data.
Severity
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
Wordfence CNA under the mitre root
CNA scorecard C 65/100 over 2215 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
expresstech Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker Affected: 0 , ≤ 11.2.6 (semver)
guessed Create a notification for this product.
Credits
Kuba
Show details on NVD website
To clipboard 

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