CVE-2026-104392
Deferred Deferred - Pending Action

Deserialization of Untrusted Data in Quiz And Survey Master

Publication date: 2026-10-09

Last updated on: 2026-10-09

Assigner: Patchstack

Description
Deserialization of Untrusted Data vulnerability in ExpressTech Quiz And Survey Master quiz-master-next allows Object Injection.This issue affects Quiz And Survey Master: from n/a through 11.2.7.

CVSS Scores

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Meta Information

Published
2026-10-09
Last Modified
2026-10-09
Generated
2026-10-09
AI Q&A
2026-10-09
EPSS Evaluated
N/A
NVD
CVE-2026-104392
EUVD
EUVD-2026-95741

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
ExpressTech Quiz And Survey Master 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Attack-Flow Graph

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Executive Summary

This vulnerability is a Deserialization of Untrusted Data issue in the ExpressTech Quiz And Survey Master plugin (quiz-master-next). It allows attackers to inject malicious objects during deserialization, potentially leading to remote code execution or other harmful actions on the server.

Impact Analysis

An attacker could exploit this to take control of your website, steal sensitive data, or perform unauthorized actions. The high CVSS score (8.8) indicates a significant risk, especially for websites using vulnerable versions of the plugin.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR and HIPAA requirements for data protection. Non-compliance may result in legal penalties, reputational damage, and loss of trust from users or clients.

Mitigation Strategies

Update the Quiz And Survey Master plugin to version 11.2.8 or later immediately. Apply Patchstack's mitigation rule to block attacks until the update is completed.

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