CVE-2026-111408: Deserialization of Untrusted Data in ExpressTech Quiz And Survey Master
Description
CVE-2026-111408 is a high-severity vulnerability in ExpressTech's Quiz And Survey Master plugin (quiz-master-next) that allows object injection via deserialization of untrusted data. This affects versions from initial releases up to 11.2.7. The vulnerability can lead to complete compromise of confidentiality, integrity, and availability of the affected system.
CVSS v3.1
Score 8.8high
Affected software
ExpressTech
Quiz And Survey Master
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves deserialization of untrusted data in the ExpressTech Quiz And Survey Master plugin, specifically quiz-master-next, which allows an attacker to perform object injection. The affected versions include all releases prior to 11.2.8. The CVSS 3.1 base score is 8.8, indicating a high impact with network attack vector, low attack complexity, requiring low privileges and no user interaction, and resulting in high confidentiality, integrity, and availability impacts.
Potential Impact
Successful exploitation can lead to full compromise of the affected system's confidentiality, integrity, and availability. This means attackers could execute arbitrary code, manipulate data, or disrupt service availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided in the available data. Users should monitor ExpressTech's advisories for updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Patchstack
- Date Reserved
- 2026-10-16T00:19:35.559Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ad5e7f42cdf04f6563c8f18
Added to database: 10/19/2026, 09:50:44 UTC
Last enriched: 10/19/2026, 10:03:15 UTC
Last updated: 10/19/2026, 10:28:11 UTC
Views: 3
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