# CVE-2026-3138: Missing authorization in Product Filter for WooCommerce by WBW

> Unauthenticated attackers can permanently delete all filter configurations in the Product Filter for WooCommerce plugin by exploiting missing authorization checks in AJAX handlers.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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:** 24 Mar 2026
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-r73c-85q5-vm33

## What is CVE-2026-3138?

CVE-2026-3138 is a medium-severity missing authorization vulnerability in woobewoo Product Filter for WooCommerce by WBW, published on 24 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Product Filter for WooCommerce by WBW plugin for WordPress is vulnerable to unauthorized data loss due to a missing capability check in all versions up to, and including, 3.1.2. This is due to the plugin's MVC framework dynamically registering unauthenticated AJAX handlers via `wp_ajax_nopriv_` hooks without verifying user capabilities, combined with the base controller's `__call()` magic method forwarding undefined method calls to the model layer, and the `havePermissions()` method defaulting to `true` when no permissions are explicitly defined. This makes it possible for unauthenticated attackers to truncate the plugin's `wp_wpf_filters` database table via a crafted AJAX request with `action=delete`, permanently destroying all filter configurations.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-3138?


## How do I fix CVE-2026-3138?

No fix has been published for CVE-2026-3138 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-3138 being exploited?

There is no known exploitation of CVE-2026-3138 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-3138 and fix it if it is affected.

What it is: CVE-2026-3138 is a medium-severity missing authorization vulnerability in woobewoo Product Filter for WooCommerce by WBW, published on 24 Mar 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-2026-3138 in the wild and no public exploit code.

Affected product: woobewoo Product Filter for WooCommerce by WBW. 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-2026-3138/ (Markdown: https://insights.sbomify.com/CVE-2026-3138/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-3138
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-3138
- OSV: https://osv.dev/vulnerability/CVE-2026-3138

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-3138/
Summaries are generated and may contain mistakes; the official description above is the record.