# CVE-2022-4940: WCFM Membership <= 2.10.0 - Missing Authorization

> Unauthenticated attackers can modify membership details and control approvals due to missing capability checks in the WCFM Membership plugin.

- **Severity:** High 7.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Apr 2023
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-7f48-x47w-f5p2

## What is CVE-2022-4940?

CVE-2022-4940 is a high-severity missing authorization vulnerability in wclovers WCFM Membership – WooCommerce Memberships for Multivendor Marketplace, published on 5 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The WCFM Membership plugin for WordPress is vulnerable to unauthorized modification and access of data in versions up to, and including, 2.10.0 due to missing capability checks on various AJAX actions. This makes it possible for unauthenticated attackers to perform a wide variety of actions such as modifying membership details, changing renewal information, controlling membership approvals, and more.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2022-4940?

It affects 1 product.


Products: Wclovers Wcfm Membership.

## How do I fix CVE-2022-4940?

No fix has been published for CVE-2022-4940 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-4940 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-4940 exists.

Public exploit code:

- WCFM Membership <= 2.10.0 - Broken Access Control (nuclei): http/cves/2022/CVE-2022-4940.yaml

## Other vulnerabilities in wclovers WCFM Membership – WooCommerce Memberships for Multivendor Marketplace

- [CVE-2023-2276](https://insights.sbomify.com/CVE-2023-2276/): Auth bypass in WCFM Membership – WooCommerce Memberships for Multivendor Marketplace (critical 9.8)
- [CVE-2022-4939](https://insights.sbomify.com/CVE-2022-4939/): WCFM Membership <= 2.10.0 - Unauthenticated Privilege Escalation (critical 9.8)
- [CVE-2022-4941](https://insights.sbomify.com/CVE-2022-4941/): WCFM Membership <= 2.9.10 - Cross-Site Request Forgery (medium 6.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-4940 and fix it if it is affected.

What it is: CVE-2022-4940 is a high-severity missing authorization vulnerability in wclovers WCFM Membership – WooCommerce Memberships for Multivendor Marketplace, published on 5 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-4940 exists.

Affected product: wclovers WCFM Membership – WooCommerce Memberships for Multivendor Marketplace. 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-2022-4940/ (Markdown: https://insights.sbomify.com/CVE-2022-4940/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-4940
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-4940
- OSV: https://osv.dev/vulnerability/CVE-2022-4940

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-4940/
Summaries are generated and may contain mistakes; the official description above is the record.