# CVE-2026-4365: LearnPress <= 4.3.2.8 - Missing Authorization to Unauthenticated Arbitrary Quiz Answer Deletion

> Unauthenticated attackers can delete arbitrary quiz answers in LearnPress due to missing capability checks on the AJAX dispatcher.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Apr 2026
- **Updated:** 14 Apr 2026
- **Also known as:** GHSA-fcmf-hc7m-63gh

## What is CVE-2026-4365?

CVE-2026-4365 is a critical missing authorization vulnerability in thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses, published on 14 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The LearnPress plugin for WordPress is vulnerable to unauthorized data deletion due to a missing capability check on the `delete_question_answer()` function in all versions up to, and including, 4.3.2.8. The plugin exposes a `wp_rest` nonce in public frontend HTML (`lpData`) to unauthenticated visitors, and uses that nonce as the only security gate for the `lp-load-ajax` AJAX dispatcher. The `delete_question_answer` action has no capability or ownership check. This makes it possible for unauthenticated attackers to delete any quiz answer option by sending a crafted POST request with a publicly available nonce.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-4365?


## How do I fix CVE-2026-4365?

No fix has been published for CVE-2026-4365 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4365 being exploited?

There is no known exploitation of CVE-2026-4365 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4365 and fix it if it is affected.

What it is: CVE-2026-4365 is a critical missing authorization vulnerability in thimpress LearnPress – WordPress LMS Plugin for Create and Sell Online Courses, published on 14 Apr 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-2026-4365 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-2026-4365/ (Markdown: https://insights.sbomify.com/CVE-2026-4365/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4365
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4365
- OSV: https://osv.dev/vulnerability/CVE-2026-4365

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-4365/
Summaries are generated and may contain mistakes; the official description above is the record.