Sign in
Deutsch English Español Polski
Medium

Shopware has Improper Input Validation issue in newsletter subscription

  • Disclosed: 20.01.2023
  • Updated: 11.10.2026 10:22

Impact

The newsletter double opt-in validation was not checked properly, and it was possible to skip the complete double opt in process.

Patches

The problem has been fixed with 6.4.18.1

Workarounds

For older versions of 6.1, 6.2, and 6.3, corresponding security measures are also available via a plugin. For the full range of functions, we recommend updating to the latest Shopware version. Or disable the newsletter registration completely.

References

https://docs.shopware.com/en/shopware-6-en/security-updates/security-update-01-2023?category=security-updates

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package shopware/core < 6.4.18.1 6.4.18.1
Composer package shopware/platform < 6.4.18.1 6.4.18.1

References

CVSS score 4.3/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Weakness (CWE)
CWE-20
Platform
Composer
Package
shopware/core, shopware/platform
Disclosed
20.01.2023
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-46h7-vj7x-fxg2 - CC BY 4.0

Vulnerability history: shopware/core

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (65) in the archive
Total entries
65
First → latest
09.2020 06.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 5
  • High 16
  • Medium 31
  • Low 13

Disclosures per year

Severity:
  1. Shopware vulnerable to a potential take over of app credentials
    High · 8.9 CVE-2026-31889 >= 6.7.0.0, < 6.7.8.1, < 6.6.10.15 6.7.8.1, 6.6.10.15
  2. Shopware: Unauthenticated data extraction possible through store-api.order endpoint
    High CVE-2026-31887 >= 6.7.0.0, < 6.7.8.1, < 6.6.10.15 6.7.8.1, 6.6.10.15
  3. Shopware Has Improper Control of Generation of Code in Twig rendered views
    High · 7.2 CVE-2026-23498 >= 6.7.0.0, < 6.7.6.1 6.7.6.1
  4. Shopware: Reflective Cross Site-Scripting (XSS) in CMS components
    High · 8.8 ghsa-9v82-vcjx-m76j >= 6.7.0.0, < 6.7.2.1 6.7.2.1
  5. Shopware Vulnerable to Blind SQL-injection in DAL aggregations
    High · 7.3 CVE-2025-27892 >= 6.7.0.0-rc1, < 6.7.0.0-rc2, >= 6.6.0.0, < 6.6.10.3, < 6.5.8.18 6.7.0.0-rc2, 6.6.10.3, 6.5.8.18
  6. Shopware allows Denial Of Service via password length
    High · 7.5 CVE-2025-30151 >= 6.6.0.0, < 6.6.10.3, >= 6.7.0.0-rc1, < 6.7.0.0-rc2, < 6.5.8.17 6.6.10.3, 6.7.0.0-rc2, 6.5.8.17
  7. Shopware vulnerable to Server Side Template Injection in Twig using Context functions
    High · 8.3 CVE-2024-42356 < 6.5.8.13, >= 6.6.0.0, < 6.6.5.1 6.5.8.13, 6.6.5.1
  8. Shopware vulnerable to Server Side Template Injection in Twig using deprecation silence tag
    High · 8.3 CVE-2024-42355 < 6.5.8.13, >= 6.6.0.0, < 6.6.5.1 6.5.8.13, 6.6.5.1
  9. Blind SQL injection in shopware
    Critical · 9.3 CVE-2024-22406 < 6.5.7.4 6.5.7.4
  10. Shopware Has Improper Control of Generation of Code in Twig rendered views
    High · 8.8 CVE-2023-2017 < 6.4.20.1 6.4.20.1
  11. Shopware has Improper Input Validation issue in newsletter subscription this entry
    Medium · 4.3 CVE-2023-22734 < 6.4.18.1 6.4.18.1
  12. Shopware vulnerable to Improper Control of Generation of Code in Twig rendered views
    Critical · 9.8 CVE-2023-22731 < 6.4.18.1 6.4.18.1
  13. Shopware database password is leaked to an unauthenticated users
    High · 7.5 CVE-2020-13997 >= 6.0.0, < 6.2.3 6.2.3
  14. Improper Access Control in Shopware
    High · 8.1 CVE-2022-24872 < 6.4.10.1 6.4.10.1
  15. Server-Side Request Forgery (SSRF) in Shopware
    High · 7.2 CVE-2022-24871 < 6.4.10.1 6.4.10.1
  16. Webcache Poisoning in shopware/platform and shopware/core
    Critical ghsa-r64m-qchj-hrjp < 6.4.6.1 6.4.6.1
  17. Command injection in mail agent settings
    High · 8.8 CVE-2021-37708 < 6.4.3.1 6.4.3.1
  18. Cross-Site Scripting via SVG media files
    High · 8.0 CVE-2021-37710 < 6.4.3.1 6.4.3.1
  19. Authenticated server-side request forgery in file upload via URL.
    High · 8.8 CVE-2021-37711 < 6.4.3.1 6.4.3.1
  20. Exposure of Sensitive Information to an Unauthorized Actor
    High · 7.5 CVE-2021-32717 < 6.4.1.1 6.4.1.1
  21. After order payment process manipulation in shopware/platform and shopware/core
    Critical ghsa-88rc-3p98-rgvx < 6.3.5.3 6.3.5.3
  22. Leak of information via Store-API aggregations in shopware/platform and shopware/core
    Critical ghsa-qg7c-q3vq-rgxr < 6.3.5.3 6.3.5.3

Know which vulnerabilities affect your application

With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.

Connect your application
DockRay newsletter

Application security in your inbox

Important vulnerabilities, actionable guidance and practical advice for your applications. Choose your technologies and follow what matters to your project.

  • A daily digest of new vulnerabilities, critical ones included.
  • Notifications about important updates.
  • Practical advice on application security and monitoring.

Leave empty to receive updates for every technology.

Privacy policy

Free to subscribe. Unsubscribe with one click in any email.