# CVE-2023-49777: WordPress YITH WooCommerce Product Add-Ons Plugin <= 4.3.0 is vulnerable to PHP Object Injection

> An attacker can exploit unsafe deserialization in the YITH WooCommerce Product Add-Ons plugin to potentially execute arbitrary code on the WordPress site.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/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:** 31 Dec 2023
- **Updated:** 28 Apr 2026
- **Also known as:** GHSA-q9xv-v8rv-88gm

## What is CVE-2023-49777?

CVE-2023-49777 is a critical unsafe deserialization vulnerability in YITH WooCommerce Product Add-Ons, published on 31 Dec 2023. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Deserialization of Untrusted Data vulnerability in YITH YITH WooCommerce Product Add-Ons.This issue affects YITH WooCommerce Product Add-Ons: from n/a through 4.3.0.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2023-49777?

It affects 1 product.


Products: Yithemes Yith Woocommerce Product Add-Ons.

## How do I fix CVE-2023-49777?

No fix has been published for CVE-2023-49777 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-49777 being exploited?

There is no known exploitation of CVE-2023-49777 in the wild and no public exploit code.

## Other vulnerabilities in YITH WooCommerce Product Add-Ons

- [CVE-2024-50448](https://insights.sbomify.com/CVE-2024-50448/): WordPress YITH WooCommerce Product Add-Ons plugin <= 4.14.1 - Reflected Cross Site Scripting (XSS) vulnerability (high 7.1)
- [CVE-2024-35680](https://insights.sbomify.com/CVE-2024-35680/): WordPress YITH WooCommerce Product Add-Ons plugin <= 4.9.2 - Content Injection vulnerability (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-49777 and fix it if it is affected.

What it is: CVE-2023-49777 is a critical unsafe deserialization vulnerability in YITH WooCommerce Product Add-Ons, published on 31 Dec 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-49777 in the wild and no public exploit code.

Affected product: YITH WooCommerce Product Add-Ons. 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-2023-49777/ (Markdown: https://insights.sbomify.com/CVE-2023-49777/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-49777
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-49777
- OSV: https://osv.dev/vulnerability/CVE-2023-49777

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-49777/
Summaries are generated and may contain mistakes; the official description above is the record.