CVE-2026-10623
Received Received - Intake
Insecure Direct Object Reference in PressPrimer Quiz WordPress Plugin

Publication date: 2026-06-18

Last updated on: 2026-06-18

Assigner: Wordfence

Description
The PressPrimer Quiz – AI Quiz Maker, Exam Builder & LMS Assessment Plugin plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 2.3.0 via the 'rule_id' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with custom-level access and above, to modify or delete quiz rules belonging to other teachers, resulting in unauthorized tampering of another user's quiz structure.
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Meta Information
Published
2026-06-18
Last Modified
2026-06-18
Generated
2026-06-18
AI Q&A
2026-06-18
EPSS Evaluated
N/A
NVD
CVE-2026-10623
EUVD
EUVD-2026-37845
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
pressprimer quiz to 2.3.0 (inc)
pressprimer quiz 2.3.1
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
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Executive Summary

The vulnerability in the PressPrimer Quiz plugin for WordPress is an Insecure Direct Object Reference (IDOR) issue affecting all versions up to and including 2.3.0. It occurs because the plugin does not properly validate the 'rule_id' parameter, which is controlled by the user. This flaw allows authenticated users with custom-level access or higher to modify or delete quiz rules that belong to other teachers, enabling unauthorized changes to another user's quiz structure.

Impact Analysis

This vulnerability can impact you by allowing attackers with certain access privileges to tamper with quiz rules that do not belong to them. Specifically, an attacker could modify or delete quiz rules created by other teachers, potentially disrupting the integrity and reliability of quizzes. This unauthorized tampering could lead to incorrect quiz behavior, loss of data, or unfair assessment conditions.

Mitigation Strategies

To mitigate this vulnerability, you should update the PressPrimer Quiz plugin to version 2.3.1 or later.

The update introduces stricter ownership enforcement for quiz items and rules, ensuring that only the owner of a quiz or users with the appropriate capability can access or modify quiz content.

This prevents authenticated attackers with custom-level access from tampering with quiz rules belonging to other users.

Compliance Impact

The vulnerability allows authenticated attackers with custom-level access to modify or delete quiz rules belonging to other teachers, resulting in unauthorized tampering of another user's quiz structure.

Such unauthorized access and modification of user data could potentially lead to non-compliance with data protection regulations like GDPR or HIPAA, which require strict controls over access to and integrity of personal and sensitive data.

However, the provided information does not explicitly mention any direct impact or assessment related to compliance with these standards.

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