# CVE-2023-6223: LearnPress <= 4.2.5.7 - Insecure Direct Object Reference to Information Disclosure

> Authenticated attackers can retrieve other users' course progress details via insecure direct object reference in the LearnPress WordPress plugin.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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:** 11 Jan 2024
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-fj4r-qrhf-ph96

## What is CVE-2023-6223?

CVE-2023-6223 is a medium-severity vulnerability in thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses, published on 11 Jan 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The LearnPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.2.5.7 via the /wp-json/lp/v1/profile/course-tab REST API due to missing validation on the 'userID' user controlled key. This makes it possible for authenticated attackers, with subscriber-level access and above, to retrieve the details of another user's course progress.

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

## Which versions are affected by CVE-2023-6223?

It affects 1 product.


Products: Thimpress Learnpress.

## How do I fix CVE-2023-6223?

No fix has been published for CVE-2023-6223 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-6223 being exploited?

There is no known exploitation of CVE-2023-6223 in the wild and no public exploit code.

## Other vulnerabilities in thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses

- [CVE-2024-8522](https://insights.sbomify.com/CVE-2024-8522/): LearnPress – WordPress LMS Plugin <= 4.2.7 - Unauthenticated SQL Injection via 'c_only_fields' (critical 10.0)
- [CVE-2024-8529](https://insights.sbomify.com/CVE-2024-8529/): LearnPress – WordPress LMS Plugin <= 4.2.7 - Unauthenticated SQL Injection via 'c_fields' (critical 10.0)
- [CVE-2022-45808](https://insights.sbomify.com/CVE-2022-45808/): WordPress LearnPress Plugin <= 4.1.7.3.2 is vulnerable to SQL Injection (critical 9.9)
- [CVE-2024-4434](https://insights.sbomify.com/CVE-2024-4434/): LearnPress – WordPress LMS Plugin <= 4.2.6.5 - Unauthenticated Time-Based SQL Injection (critical 9.8)
- [CVE-2023-6567](https://insights.sbomify.com/CVE-2023-6567/): LearnPress <= 4.2.5.7 - Unauthenticated SQL Injection via order_by (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-6223 and fix it if it is affected.

What it is: CVE-2023-6223 is a medium-severity vulnerability in thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses, published on 11 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-2023-6223 in the wild and no public exploit code.

Affected product: thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses. 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-2023-6223/ (Markdown: https://insights.sbomify.com/CVE-2023-6223/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-6223
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-6223
- OSV: https://osv.dev/vulnerability/CVE-2023-6223

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-6223/
Summaries are generated and may contain mistakes; the official description above is the record.