CVE-2026-25329

Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker <= 10.3.4 - Missing Authorization

2026-02-05 00:00
Mohammad Amin Hajian (mamadrce)

Strategic Overview

Status
Patched in 10.3.5
Affected Plugin
Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker
Affected Version
<= 10.3.4
CVSS
4.3Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2026-25329
View all Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker vulnerabilities

At a glance

CVE-2026-25329 is a medium-severity Missing Authorization vulnerability in the Quiz and Survey Master (QSM) WordPress plugin, affecting versions <= 10.3.4. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 10.3.5; sites on affected versions should update now. Disclosed February 2026, reported by Mohammad Amin Hajian (mamadrce).

Vulnerability Overview

The Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in all versions up to, and including, 10.3.4. This makes it possible for authenticated attackers, with Subscriber-level access and above, to perform an unauthorized action.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.

CWE-862: Missing Authorization

Reaching this weakness in Quiz and Survey Master (QSM) <= 10.3.4 takes a caller who can reach the endpoint. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Quiz and Survey Master (QSM) the fix is 10.3.5: builds <= 10.3.4 are affected, anything from 10.3.5 onward is not.

Remediation

Update to version 10.3.5, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Quiz and Survey Master (QSM) 10.3.5 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-25329https://www.wordfence.com/threat-intel/vulnerabilities/id/2368e46a-022c-4829-80f1-7d010e8587edhttps://nvd.nist.gov/vuln/detail/CVE-2026-25329

Related records

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