# CVE-2026-81199: MasterStudy LMS < 3.7.46 - Unauthenticated Student Statistics Disclosure via student/stats REST Route

> Unauthenticated attackers can access any registered user's learning statistics, including course counts and quiz totals, via an unprotected REST route.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Sep 2026
- **Updated:** 2 Sep 2026
- **Also known as:** GHSA-gg9m-75r5-j67w

## What is CVE-2026-81199?

CVE-2026-81199 is a medium-severity missing authorization vulnerability in Unknown MasterStudy LMS WordPress Plugin, published on 2 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The MasterStudy LMS WordPress Plugin  WordPress plugin before 3.7.46 does not perform an authorization check before returning a student's learning statistics, allowing unauthenticated attackers to disclose the course counts, points, certificates, quiz and assignment totals of any registered user.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2026-81199?


## How do I fix CVE-2026-81199?

No fix has been published for CVE-2026-81199 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-81199 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-81199 exists.

Public exploit code:

- MasterStudy LMS < 3.7.46 - Unauthenticated Student Statistics Disclosure (nuclei): http/cves/2026/CVE-2026-81199.yaml

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-81199 and fix it if it is affected.

What it is: CVE-2026-81199 is a medium-severity missing authorization vulnerability in Unknown MasterStudy LMS WordPress Plugin, published on 2 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-81199 exists.

Affected product: Unknown MasterStudy LMS WordPress Plugin. 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-2026-81199/ (Markdown: https://insights.sbomify.com/CVE-2026-81199/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-81199
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-81199
- OSV: https://osv.dev/vulnerability/CVE-2026-81199

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-81199/
Summaries are generated and may contain mistakes; the official description above is the record.