CVE-2026-15022 Tutor LMS <= 4.0.0 - Authenticated (Subscriber+) SQL Injection via Stored Quiz Answer Array
Authenticated attackers can inject SQL via stored quiz answers to extract sensitive database information when privileged users view attempt details.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15022?
CVE-2026-15022 is a medium-severity SQL injection vulnerability in themeum Tutor LMS – eLearning and online course solution, published on 16 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to generic SQL Injection via Stored Quiz Answer Array in all versions up to, and including, 4.0.0 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with custom-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. The payload is stored at quiz-attempt time via the wp_ajax_tutor_quiz_abandon handler, but the injected SQL executes only when a privileged user or Tutor REST API key holder requests the /wp-json/tutor/v1/quiz-attempt-details/{id} endpoint, making this a second-order (stored) injection chain.
Weakness: CWE-89
Which versions are affected by CVE-2026-15022?
How do I fix CVE-2026-15022?
No fix has been published for CVE-2026-15022 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-15022 being exploited?
There is no known exploitation of CVE-2026-15022 in the wild and no public exploit code.
Sources
Also known as GHSA-ghjh-hcg5-5c66.