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Vulnerability record · CVE-2021-24562 · published 23 August 2021

CVE-2021-24562: Lifterlms insecure direct object reference vulnerability

Lifterlms · Lifterlms

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

7.5 CVSS 3.1 High EPSS 1.6% · top 24.8% CWE-639 · Insecure direct object reference
7.5CVSS 3.1 base score, v2 5.0
1.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://make.lifterlms.com/2021/05/17/lifterlms-version-4-21-2/ Release NotesVendor Advisory
https://wpscan.com/vulnerability/d45bb744-4a0d-4af0-aa16-71f7e3ea6e00 ExploitThird Party Advisory
https://make.lifterlms.com/2021/05/17/lifterlms-version-4-21-2/ Release NotesVendor Advisory
https://wpscan.com/vulnerability/d45bb744-4a0d-4af0-aa16-71f7e3ea6e00 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-24562), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.