What is CVE-2026-9233?

CVE-2026-9233 is a medium-severity vulnerability in Expresstech Quiz And Survey Master (Qsm) – Easy Maker, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-06-27.

How severe is CVE-2026-9233?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Expresstech Quiz And Survey Master (Qsm) – Easy Maker

CVE-2026-9233

The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 11.1.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to create, modify, and delete quiz output templates stored in the mlw_quiz_output_templates database table, including storing unsanitized HTML content such as arbitrary script tags.

Vulnerability class: Broken Access Control

Published 2026-06-27 · last modified 2026-06-29.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (38.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Expresstech Quiz And Survey Master (Qsm) – Easy Maker — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Frequently asked questions

What is CVE-2026-9233?: CVE-2026-9233 is a medium-severity vulnerability in Expresstech Quiz And Survey Master (Qsm) – Easy Maker, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-06-27.
How severe is CVE-2026-9233?: Medium severity. CVSS v3 base score is 4.3 out of 10.