TI-2021-06847 Aliases CVE-2021-24562 GHSA-h388-6737-2grv

LifterLMS < 4.21.2 - Access Other Student Grades/Answers via IDOR

LOW 36CWE-639Published 2021-08-23 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-639.

Summary

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

Why it matters now

EPSS 0.01625 76th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress (Unknown): 4.21.2

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Unknown	LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress	4.21.2 to before 4.21.2	4.21.2	Patch available	CNA

LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress VendorUnknown Affected 4.21.2 to before 4.21.2 Fixed in 4.21.2 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:lifterlms:lifterlms::::::wordpress::*	before 4.21.2	Vulnerable	chrisbadgett

cpe:2.3:a:lifterlms:lifterlms:*:*:*:*:*:wordpress:*:* Versions before 4.21.2 Vulnerable ·chrisbadgett

Remediation

Fix · CNA LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress (Unknown) Fixed in 4.21.2

Timeline

2026-10-02 Threatist record created from CVE-2021-24562
2026-10-03 Alias added: GHSA-h388-6737-2grv

References

Exploit 1

https://wpscan.com/vulnerability/d45bb744-4a0d-4af0-aa16-71f7e3ea6e00

Advisory 1

https://make.lifterlms.com/2021/05/17/lifterlms-version-4-21-2/

TI-2024-12660 LifterLMS – WP LMS for eLearning, Online Courses, & Quizzes < 8.0.1 - Reflected XSS CVSS 3.1MEDIUM 6.1
TI-2019-11948 An issue was discovered in the LifterLMS plugin through 3.34.5 for WordPress. CVSS 3.1CRITICAL 9.8
TI-2020-04909 LifterLMS Wordpress plugin version below 3.37.15 is vulnerable to arbitrary file write leading to remote code execution CVSS 3.1CRITICAL 9.8
TI-2025-32767 WordPress LifterLMS plugin <= 8.0.6 - SQL Injection Vulnerability CVSS 3.1CRITICAL 9.8
TI-2024-04416 LifterLMS – WordPress LMS Plugin for eLearning <= 7.6.2 - Authenticated (Contributor+) SQL Injection via Shortcode CVSS 3.1HIGH 8.8
TI-2024-20735 WordPress LifterLMS plugin <= 7.5.0 - Cross Site Request Forgery (CSRF) vulnerability CVSS 3.1HIGH 8.8

See all 13 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences