# CVE-2021-4347: Advanced Shipment Tracking for WooCommerce <= 3.2.6 - Authenticated WordPress Options Change

> Authenticated users, including customers, can arbitrarily update any WordPress option due to missing authorization checks in the Advanced Shipment Tracking plugin.

- **Severity:** Critical 9.9 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H`)
- **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:** 7 Jun 2023
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-9cp6-9c8r-555x

## What is CVE-2021-4347?

CVE-2021-4347 is a critical missing authorization vulnerability in zorem Advanced Shipment Tracking for WooCommerce, published on 7 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The function update_shipment_status_email_status_fun in the plugin Advanced Shipment Tracking for WooCommerce in versions up to 3.2.6 is vulnerable to authenticated arbitrary options update. The function allows attackers (including those at customer level) to update any WordPress option in the database. Version 3.2.5 was initially released as a fix, but doesn't fully address the issue.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2021-4347?

It affects 1 product.


Products: Zorem Advanced Shipment Tracking for Woocommerce.

## How do I fix CVE-2021-4347?

No fix has been published for CVE-2021-4347 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-4347 being exploited?

There is no known exploitation of CVE-2021-4347 in the wild and no public exploit code.

## Other vulnerabilities in zorem Advanced Shipment Tracking for WooCommerce

- [CVE-2022-41635](https://insights.sbomify.com/CVE-2022-41635/): WordPress Advanced Shipment Tracking for WooCommerce Plugin <= 3.5.2 is vulnerable to Cross Site Request Forgery (CSRF) (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-4347 and fix it if it is affected.

What it is: CVE-2021-4347 is a critical missing authorization vulnerability in zorem Advanced Shipment Tracking for WooCommerce, published on 7 Jun 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-4347 in the wild and no public exploit code.

Affected product: zorem Advanced Shipment Tracking for WooCommerce. 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-2021-4347/ (Markdown: https://insights.sbomify.com/CVE-2021-4347/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-4347
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-4347
- OSV: https://osv.dev/vulnerability/CVE-2021-4347

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-4347/
Summaries are generated and may contain mistakes; the official description above is the record.