# CVE-2024-12721: Custom Product Tabs For WooCommerce <= 1.2.4 - Authenticated (Shop Manager+) PHP Object Injection

> Authenticated attackers with Shop Manager access can exploit PHP object injection to potentially execute code, read data, or delete files if a POP chain exists.

- **Severity:** High 7.2 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 21 Dec 2024
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-5639-7qch-2gcr

## What is CVE-2024-12721?

CVE-2024-12721 is a high-severity unsafe deserialization vulnerability in webbuilder143 Custom Product tabs for WooCommerce, published on 21 Dec 2024. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

The Custom Product Tabs For WooCommerce plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.2.4 via deserialization of untrusted input from the 'wb_custom_tabs' parameter. This makes it possible for authenticated attackers, with Shop Manager-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2024-12721?

It affects 1 product.


Products: Webbuilder143 Custom Product Tabs for Woocommerce.

## How do I fix CVE-2024-12721?

No fix has been published for CVE-2024-12721 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-12721 being exploited?

There is no known exploitation of CVE-2024-12721 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-12721 and fix it if it is affected.

What it is: CVE-2024-12721 is a high-severity unsafe deserialization vulnerability in webbuilder143 Custom Product tabs for WooCommerce, published on 21 Dec 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-12721 in the wild and no public exploit code.

Affected product: webbuilder143 Custom Product tabs 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-2024-12721/ (Markdown: https://insights.sbomify.com/CVE-2024-12721/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-12721
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-12721
- OSV: https://osv.dev/vulnerability/CVE-2024-12721

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-12721/
Summaries are generated and may contain mistakes; the official description above is the record.