What is the CVSS score of CVE-2026-9230?

CVE-2026-9230 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N. EPSS exploitation probability: 0.3%.

Quiz and Survey Master CVE-2026-9230

EUVD-2026-41513 MEDIUM

Missing Authorization (CWE-862)

2026-07-03 Wordfence

GHSA-j6gj-9v56-qvqx

WordPress Authentication Bypass Quiz And Survey Master Qsm Easy Quiz And Survey Maker Wordpress Plugin Expresstech

4.3

CVSS 3.1 · Vendor: Wordfence

Severity by source

Vendor (Wordfence) PRIMARY

4.3 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

vuln.today AI

4.3 MEDIUM

Authenticated contributor access (PR:L), network vector, low integrity impact only.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (Wordfence).

CVSS VectorVendor: Wordfence

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Jul 03, 2026 - 08:21 vuln.today

CVE Published

Jul 03, 2026 - 06:50 cve.org

MEDIUM 4.3

DescriptionCVE.org

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 modify quizzes they do not own, overwrite quiz results pages, and reroute quiz-result notification emails to attacker-controlled addresses. An attacker first calls the /quiz/structure endpoint with an arbitrary victim quiz ID to obtain a valid nonce bound to that quiz ID and their own user ID, then presents that nonce to the /quizzes/{id}/emails save endpoint, which accepts it without verifying quiz ownership.

AnalysisAI

Authorization bypass in Quiz and Survey Master WordPress plugin for versions up to 11.1.4 allows authenticated attackers with contributor-level access to modify quizzes they do not own, overwrite quiz results pages, and redirect notification emails to attacker-controlled addresses. The flaw stems from the email save endpoint accepting a nonce without verifying quiz ownership. No public exploit or active exploitation has been identified, and the EPSS probability is low (0.31%).

Technical ContextAI

The vulnerability resides in the WordPress REST API endpoints implemented by the plugin. The /quiz/structure endpoint returns a nonce tied to a user ID and quiz ID, but the /quizzes/{id}/emails save endpoint only validates the nonce and does not check whether the authenticated user owns the quiz. This is a classic Missing Authorization (CWE-862) issue. The affected product is the Quiz and Survey Master (QSM) plugin, identified by CPE cpe:2.3:a:expresstech:quiz_and_survey_master_(qsm)_-_easy_quiz_and_survey_maker:*:*:*:*:*:*:*:*.

RemediationAI

An upstream fix has been committed to the WordPress plugin repository (changeset reference), but a released patched version beyond 11.1.4 has not been independently confirmed. Users should update to the latest available version as soon as a patched release is published. As a workaround, restrict the contributor role's capabilities to minimize risk, or use a Web Application Firewall (WAF) rule to block requests to the /quizzes/{id}/emails endpoint from contributor accounts. Note that limiting contributor privileges may affect legitimate workflow.