# CVE-2023-6733: WP-Members Membership Plugin <= 3.4.8 - Missing Authorization to Sensitive Information Exposure

> Authenticated contributors can extract sensitive user data like emails and password hashes via the wpmem_field shortcode due to missing authorization checks.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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:** 4 Jan 2024
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-74jf-25c2-5jf2

## What is CVE-2023-6733?

CVE-2023-6733 is a medium-severity missing authorization vulnerability in cbutlerjr WP-Members Membership Plugin, published on 4 Jan 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The WP-Members Membership Plugin plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.4.8 via the wpmem_field shortcode. This makes it possible for authenticated attackers, with contributor access and above, to extract sensitive data including user emails, password hashes, usernames, and more.

Weakness: CWE-862 (Missing Authorization), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2023-6733?

It affects 1 product.


Products: Butlerblog Wp-Members.

## How do I fix CVE-2023-6733?

No fix has been published for CVE-2023-6733 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-6733 being exploited?

There is no known exploitation of CVE-2023-6733 in the wild and no public exploit code.

## Other vulnerabilities in cbutlerjr WP-Members Membership Plugin

- [CVE-2019-15660](https://insights.sbomify.com/CVE-2019-15660/): Cross-site request forgery in n/a (high 8.8)
- [CVE-2024-1852](https://insights.sbomify.com/CVE-2024-1852/): WP-Members Membership Plugin <= 3.4.9.2 - Unauthenticated Stored Cross-Site Scripting (high 7.2)
- [CVE-2024-10374](https://insights.sbomify.com/CVE-2024-10374/): WP-Members <= 3.4.9.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via wpmem_loginout Shortcode (medium 6.4)
- [CVE-2024-1987](https://insights.sbomify.com/CVE-2024-1987/): WP-Members Membership Plugin <= 3.4.9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode (medium 6.4)
- [CVE-2024-9231](https://insights.sbomify.com/CVE-2024-9231/): WP-Members Membership Plugin <= 3.4.9.5 - Reflected Cross-Site Scripting (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-6733 and fix it if it is affected.

What it is: CVE-2023-6733 is a medium-severity missing authorization vulnerability in cbutlerjr WP-Members Membership Plugin, published on 4 Jan 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-6733 in the wild and no public exploit code.

Affected product: cbutlerjr WP-Members Membership 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-2023-6733/ (Markdown: https://insights.sbomify.com/CVE-2023-6733/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-6733
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-6733
- OSV: https://osv.dev/vulnerability/CVE-2023-6733

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-6733/
Summaries are generated and may contain mistakes; the official description above is the record.