# CVE-2019-12799: Shopware Insecure Deserialization Vulnerability

> An attacker can achieve remote code execution in Shopware by exploiting a PHP object instantiation vulnerability that bypasses previous security patches.

- **Severity:** Medium 6.5 (`CVSS:3.0/AC:L/AV:N/A:N/C:H/I:N/PR:L/S:U/UI:N`)
- **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:** 13 Jun 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-rf8f-hqjv-986p

## What is CVE-2019-12799?

CVE-2019-12799 is a medium-severity unsafe deserialization vulnerability in Shopware Shopware, published on 13 Jun 2019. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

In createInstanceFromNamedArguments in Shopware through 5.6.x, a crafted web request can trigger a PHP object instantiation vulnerability, which can result in an arbitrary deserialization if the right class is instantiated. An attacker can leverage this deserialization to achieve remote code execution. NOTE: this issue is a bypass for a CVE-2017-18357 whitelist patch.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2019-12799?

2 open source packages ship an affected version, including shopware/shopware. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `shopware/shopware` | Packagist | From 5.3.0 to 5.6.0 | None |
| `shopware/shopware` | Packagist | From 5.3.0 to 5.6.0 | None |

Products: Shopware Shopware.

## How do I fix CVE-2019-12799?

No fix has been published for CVE-2019-12799 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-12799 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-12799 exists.

Public exploit code:

- Shopware createInstanceFromNamedArguments PHP Object Instantiation RCE (metasploit)

## Other vulnerabilities in Shopware Shopware

- [CVE-2023-22731](https://insights.sbomify.com/CVE-2023-22731/): Improper Control of Generation of Code in Twig rendered views in shopware (critical 10.0)
- [CVE-2016-3109](https://insights.sbomify.com/CVE-2016-3109/): Shopware RCE Vulnerability (critical 9.8)
- [CVE-2024-22406](https://insights.sbomify.com/CVE-2024-22406/): Blind SQL-injection in DAL aggregations in Shopware (critical 9.3)
- [CVE-2021-32711](https://insights.sbomify.com/CVE-2021-32711/): Leak of information via Store-API (critical 9.1)
- [CVE-2026-31887](https://insights.sbomify.com/CVE-2026-31887/): Shopware unauthenticated data extraction possible through store-api.order endpoint (high 8.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-12799 and fix it if it is affected.

What it is: CVE-2019-12799 is a medium-severity unsafe deserialization vulnerability in Shopware Shopware, published on 13 Jun 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-12799 exists.

Affected packages and fixed versions:
- shopware/shopware (Packagist): affected from 5.3.0 up to 5.6.0; no fix listed
- shopware/shopware (Packagist): affected from 5.3.0 up to 5.6.0; no fix listed

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-2019-12799/ (Markdown: https://insights.sbomify.com/CVE-2019-12799/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-12799
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-12799
- OSV: https://osv.dev/vulnerability/CVE-2019-12799

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-12799/
Summaries are generated and may contain mistakes; the official description above is the record.