# CVE-2026-88846: MasterStudy LMS 2.3.0 - < 3.7.50 - Unauthenticated Account Creation with Registration Disabled

> Unauthenticated attackers can create accounts on sites with registration disabled, potentially leading to unauthorized access.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/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:** 24 Sep 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-4mwj-c7j6-fqvw

## What is CVE-2026-88846?

CVE-2026-88846 is a medium-severity missing authorization vulnerability in Unknown MasterStudy LMS WordPress Plugin, published on 24 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 3.7.50 does not check whether user registration is enabled on the site before creating an account through one of its front-end registration flows, allowing unauthenticated users to create accounts, and be logged into them, on sites where registration has been deliberately disabled.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-88846?


## How do I fix CVE-2026-88846?

No fix has been published for CVE-2026-88846 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-88846 being exploited?

There is no known exploitation of CVE-2026-88846 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-88846 and fix it if it is affected.

What it is: CVE-2026-88846 is a medium-severity missing authorization vulnerability in Unknown MasterStudy LMS WordPress Plugin, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-88846 in the wild and no public exploit code.

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-2026-88846/ (Markdown: https://insights.sbomify.com/CVE-2026-88846/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-88846
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-88846
- OSV: https://osv.dev/vulnerability/CVE-2026-88846

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-88846/
Summaries are generated and may contain mistakes; the official description above is the record.