# CVE-2026-7648: Business logic in LearnPress – WordPress LMS Plugin for Create and Sell Online Courses

> Authenticated attackers can bypass payment requirements to enroll in paid courses for free by manipulating the quantity parameter in the REST API.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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:** 14 May 2026
- **Updated:** 14 May 2026
- **Also known as:** GHSA-gc4c-8j88-m8pm

## What is CVE-2026-7648?

CVE-2026-7648 is a medium-severity vulnerability in thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses, published on 14 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The LearnPress – WordPress LMS Plugin for Create and Sell Online Courses plugin for WordPress is vulnerable to payment bypass through user-controlled key in all versions up to, and including, 4.3.5. This is due to improper handling of user-supplied request parameters in the REST API endpoint, which passes the unsanitized parameter array to the add_to_cart() function where array_merge() allows attacker-controlled values to overwrite hardcoded defaults. This makes it possible for authenticated attackers, with subscriber-level access and above, to enroll in any paid course entirely free of charge by supplying a quantity value of zero, which causes the order total to calculate as $0 and bypasses all payment gateway requirements.

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

## Which versions are affected by CVE-2026-7648?


## How do I fix CVE-2026-7648?

No fix has been published for CVE-2026-7648 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7648 being exploited?

There is no known exploitation of CVE-2026-7648 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7648 and fix it if it is affected.

What it is: CVE-2026-7648 is a medium-severity vulnerability in thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses, published on 14 May 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-2026-7648 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-2026-7648/ (Markdown: https://insights.sbomify.com/CVE-2026-7648/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7648
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7648
- OSV: https://osv.dev/vulnerability/CVE-2026-7648

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-7648/
Summaries are generated and may contain mistakes; the official description above is the record.