# CVE-2026-5060: Missing authorization in MasterStudy LMS WordPress Plugin – for Online Courses and Education

> Authenticated instructors can delete arbitrary attachments belonging to any user due to missing ownership validation in the MasterStudy LMS plugin.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Jul 2026
- **Updated:** 29 Jul 2026
- **Also known as:** GHSA-3wr4-2wwf-jjxw

## What is CVE-2026-5060?

CVE-2026-5060 is a medium-severity missing authorization vulnerability in stylemix MasterStudy LMS WordPress Plugin – for Online Courses and Education, published on 29 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The MasterStudy LMS WordPress Plugin – for Online Courses and Education plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.14. This is due to the `stm_lms_delete_cover()` function lacking ownership validation on the `file_id` parameter before passing it to `wp_delete_attachment()`. This makes it possible for authenticated attackers, with Instructor-level access and above, to delete arbitrary attachments belonging to any user by enumerating sequential attachment IDs.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-5060?


## How do I fix CVE-2026-5060?

No fix has been published for CVE-2026-5060 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-5060 being exploited?

There is no known exploitation of CVE-2026-5060 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5060 and fix it if it is affected.

What it is: CVE-2026-5060 is a medium-severity missing authorization vulnerability in stylemix MasterStudy LMS WordPress Plugin – for Online Courses and Education, published on 29 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-5060 in the wild and no public exploit code.

Affected product: stylemix MasterStudy LMS WordPress Plugin – for Online Courses and Education. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-5060/ (Markdown: https://insights.sbomify.com/CVE-2026-5060/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5060
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5060
- OSV: https://osv.dev/vulnerability/CVE-2026-5060

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-5060/
Summaries are generated and may contain mistakes; the official description above is the record.