High severity · published Oct 9, 2026
CVE-2026-104392
WordPress Quiz And Survey Master plugin <= 11.2.7 - PHP Object Injection vulnerability
8.8
CVSS
0.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QA
Quiz And Survey Master · ExpressTech
through 11.2.7 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-104392
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-104392
vdb-entry
https://patchstack.com/database/wordpress/plugin/quiz-master-next/vulnerability/wordpress-quiz-and-survey-master-plugin-11-2-7-php-object-injection-vulnerability?_s_id=cve
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