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Low

Shopware default newsletter opt-in settings allow for mass sign-up abuse

  • Disclosed: 09.04.2025
  • Updated: 11.10.2026 10:22

Impact

Currently the default settings for double-opt-in allow for mass unsolicited newsletter sign-ups without confirmation.

Default settings are:

Newsletter: Double Opt-in - active

Newsletter: Double opt-in for registered customers - disabled

Log-in & sign-up: Double opt-in on sign-up - disabled

With these settings, anyone can register an account on the shop using any e-mail-address and then check the check-box in the account page to sign up for the newsletter. The recipient will receive two mails confirming registering and signing up for the newsletter, no confirmation link needed to be clicked for either. In the backend the recipient is set to “instantly active”.

Patches

Update to Shopware 6.6.10.3 or 6.5.8.17

Workarounds

For older versions of 6.4, corresponding security measures are also available via a plugin. For the full range of functions, we recommend updating to the latest Shopware version.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package shopware/core >= 6.6.0.0-rc1, < 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
Composer package shopware/platform >= 6.6.0.0-rc1, < 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

References

CVSS score 5.3/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE)
CWE-1188, CWE-799
Platform
Composer
Package
shopware/core, shopware/platform
Disclosed
09.04.2025
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-4h9w-7vfp-px8m - 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 default newsletter opt-in settings allow for mass sign-up abuse this entry
    Low · 5.3 CVE-2025-32378 >= 6.6.0.0-rc1, < 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. Blind SQL injection in shopware
    Critical · 9.3 CVE-2024-22406 < 6.5.7.4 6.5.7.4
  11. 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
  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
Show more (2) Showing 20 of 22

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