CVE-2026-14826

Quiz And Survey Master <= 11.2.3 - Authenticated (Contributor+) Insecure Direct Object Reference

2026-08-17 00:00
Revanth Hari Narayana Matte

Strategic Overview

Status
Patched in 11.2.4
Affected Plugin
Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker
Affected Version
<= 11.2.3
CVSS
4.3Medium
Weakness type
CWE-639 · Authorization Bypass Through User-Controlled Key
CVE
CVE-2026-14826
View all Quiz and Survey Master (QSM) – Quiz Maker & Survey Maker vulnerabilities

At a glance

CVE-2026-14826 is a medium-severity Authorization Bypass Through User-Controlled Key vulnerability in the Quiz and Survey Master (QSM) WordPress plugin, affecting versions <= 11.2.3. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 11.2.4; sites on affected versions should update now. Disclosed August 2026, reported by Revanth Hari Narayana Matte.

Vulnerability Overview

The Quiz And Survey Master plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 11.2.3. This is due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with contributor-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-639: Authorization Bypass Through User-Controlled Key

Reaching this weakness in Quiz and Survey Master (QSM) <= 11.2.3 takes an account at Contributor level or above. Authorization bypass through a user-controlled key, often called insecure direct object reference, means the application looks up a record by an identifier from the request without checking that the caller owns it.

Changing a number in the request is enough to read or modify other users' records, which on commerce and membership sites means customer data. For Quiz and Survey Master (QSM) the fix is 11.2.4: builds <= 11.2.3 are affected, anything from 11.2.4 onward is not.

Remediation

Update to version 11.2.4, 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) 11.2.4 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-14826https://www.wordfence.com/threat-intel/vulnerabilities/id/0767e5ef-477f-4b0c-a86e-6298614c9777https://nvd.nist.gov/vuln/detail/CVE-2026-14826

Related records

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