# CVE-2022-21686: Server Side Twig Template Injection in PrestaShop

> Attackers can inject Twig code in the PrestaShop back office when using the legacy layout, leading to remote code execution.

- **Severity:** Critical 9.0 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 26 Jan 2022
- **Updated:** 23 Apr 2025
- **Also known as:** GHSA-mrq4-7ch7-2465

## What is CVE-2022-21686?

CVE-2022-21686 is a critical code injection vulnerability in Prestashop Prestashop, published on 26 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

PrestaShop is an Open Source e-commerce platform. Starting with version 1.7.0.0 and ending with version 1.7.8.3, an attacker is able to inject twig code inside the back office when using the legacy layout. The problem is fixed in version 1.7.8.3. There are no known workarounds.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2022-21686?

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


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `prestashop/prestashop` | Packagist | From 1.7.0.0 | 1.7.8.3 |
| `prestashop/prestashop` | Packagist | From 1.7.0.0 | 1.7.8.3 |

Products: Prestashop Prestashop.

## How do I fix CVE-2022-21686?

Upgrade prestashop/prestashop to 1.7.8.3 or later.

## Is CVE-2022-21686 being exploited?

There is no known exploitation of CVE-2022-21686 in the wild and no public exploit code.

## Other vulnerabilities in Prestashop Prestashop

- [CVE-2023-30839](https://insights.sbomify.com/CVE-2023-30839/): PrestaShop vulnerable to SQL filter bypass leading to arbitrary write requests using "SQL Manager" (critical 10.0)
- [CVE-2008-5791](https://insights.sbomify.com/CVE-2008-5791/): Other in n/a (critical 10.0)
- [CVE-2024-41651](https://insights.sbomify.com/CVE-2024-41651/): Server-side request forgery in n/a (critical 9.8)
- [CVE-2022-31181](https://insights.sbomify.com/CVE-2022-31181/): Remote code execution in prestashop (critical 9.8)
- [CVE-2021-3110](https://insights.sbomify.com/CVE-2021-3110/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-21686 and fix it if it is affected.

What it is: CVE-2022-21686 is a critical code injection vulnerability in Prestashop Prestashop, published on 26 Jan 2022. 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-2022-21686 in the wild and no public exploit code.

Affected packages and fixed versions:
- prestashop/prestashop (Packagist): affected from 1.7.0.0; fixed in 1.7.8.3
- prestashop/prestashop (Packagist): affected from 1.7.0.0; fixed in 1.7.8.3

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-2022-21686/ (Markdown: https://insights.sbomify.com/CVE-2022-21686/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-21686
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-21686
- OSV: https://osv.dev/vulnerability/CVE-2022-21686

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-21686/
Summaries are generated and may contain mistakes; the official description above is the record.