PressPrimer Quiz <= 2.3.0 — Insecure Direct Object Reference to Authenticated (Custom+) Arbitrary Modification via 'quiz_id', 'item_id', and 'rule_id' Parameters

Am I affected?

• Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under PressPrimer Quiz – AI Quiz Maker, Exam Builder & LMS Assessment Plugin.
• No admin access? Run a passive check of your site. It reads public files only.

What to do

1. Update to version 2.3.1, or a newer patched version
2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
3. Watch PressPrimer Quiz – AI Quiz Maker, Exam Builder & LMS Assessment Plugin to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Truong Tran.

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.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

• Advisorywordfence.com

Timeline

1. Jun 17, 2026

   CVE published

   Severity medium, CVSS 4.3

2. Nov 13, 2026

   Record last updated