Medium severity · published Jan 6, 2026
CVE-2025-9318
Quiz and Survey Master (QSM) <= 10.3.1 - Authenticated (Subscriber+) SQL Injection via `is_linking` Query Parameter
6.5
CVSS
0.3%
EPSS
No
On KEV
Description
The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to time-based SQL Injection via the ‘is_linking’ parameter in all versions up to, and including, 10.3.1 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with Subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
QA
Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker · expresstech
through 10.3.1 · source: vendor
QA
Quiz And Survey Master · Expresstech
before 10.3.2 · source: NVD
Affected product
QA
Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker
expresstech
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-9318
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-9318
Product
https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.2.6/php/rest-api.php#L533
Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/e6524e66-5bd1-4616-8185-c0501a09893e?source=cve
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