Quiz and Survey Master randon_category option permits SQL injection

Quiz and Survey Master through 11.2.1 incorporates the attacker-controlled randon_category quiz option into SQL without adequate escaping or preparation. A user holding the plugin's affected custom quiz-management access can append SQL and extract sensitive database information. The public.

CVE / CNA score 6.5 CVSS 3.1 · security@wordfence.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker
Plugin slug: quiz-master-next
Affected: <= 11.2.1
Safe version: 11.2.4
Published: Aug 16, 2026
Weakness: CWE-89 — Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

This CVE was published Aug 16, 2026 and is one of 48 known issues for this plugin.

What to do

Update, patch or deactivate.

Update the affected component to 11.2.4 or later. The official upstream changelog identifies this release as addressing CVE-2026-15963.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to generic SQL Injection via 'randon_category' Quiz Option in all versions up to, and including, 11.2.1 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 custom-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References

Primary and upstream sources

Data attribution: This product uses the NVD API but is not endorsed or certified by the NVD.

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