CVE-2021-24562 LifterLMS < 4.21.2 - Access Other Student Grades/Answers via IDOR
Students can view other students' answers and grades due to an Insecure Direct Object Reference vulnerability in the LifterLMS plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-24562?
CVE-2021-24562 is a high-severity missing authorization vulnerability in Unknown LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress, published on 23 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress plugin before 4.21.2 was affected by an IDOR issue, allowing students to see other student answers and grades
Weakness: CWE-639
Which versions are affected by CVE-2021-24562?
It affects 1 product.
Products include Lifterlms Lifterlms.
How do I fix CVE-2021-24562?
No fix has been published for CVE-2021-24562 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-24562 being exploited?
There is no known exploitation of CVE-2021-24562 in the wild and no public exploit code.
Other vulnerabilities in Unknown LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress
- CVE-2020-6008 File upload in LifterLMS Wordpress Plugin
- CVE-2019-15896 Missing authorization in n/a
- CVE-2025-52717 WordPress LifterLMS plugin <= 8.0.6 - SQL Injection Vulnerability
- CVE-2024-4743 LifterLMS – WordPress LMS Plugin for eLearning <= 7.6.2 - Authenticated (Contributor+) SQL Injection via Shortcode
- CVE-2024-7349 LifterLMS <= 7.7.5 - Authenticated (Admin+) SQL Injection
Sources
Also known as GHSA-h388-6737-2grv.