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CVE-2025-9318

Quiz and Survey Master (QSM) <= 10.3.1 - Authenticated (Subscriber+) SQL Injection via `is_linking` Query Parameter

Published: Jan 6, 2026Updated: Jan 9, 2026 Sources: CVE List NVDCWE-89
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.2%
Top 87.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
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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 Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-89

Affected Products

Quiz and Survey Master (QSM) – Easy Quiz and Survey Makerexpresstech
On-prem
Web & CMS Plugins / wordpress-plugin
quiz and survey masterexpresstech
On-premWeb App
Web & CMS Plugins / cms-core
expresstechcommercialWeb & CMS Pluginsaka quiz and survey master, qsm

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

1 technique
Initial Access
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References

https://www.wordfence.com/threat-intel/vulnerabilities/id/e6524e66-5bd1-4616-8185-c0501a09893e?source=cve
wordfence.com
https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.2.6/php/rest-api.php#L533
plugins.trac.wordpress.org

Timeline

Published
Jan 6, 2026
Last Updated
Jan 9, 2026

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