MediumGHSA-46h7-vj7x-fxg2CVE-2023-22734

Shopware has Improper Input Validation issue in newsletter subscription

Published 20 Jan 2023 · Updated 10 Sept 2026

Affected packages

shopware/platformComposer

Affected: <6.4.18.1
Fixed in: 6.4.18.1

Update to the fixed version for your release line, for example:composer require shopware/platform:^6.4.18.1

shopware/coreComposer

Affected: <6.4.18.1
Fixed in: 6.4.18.1

Update to the fixed version for your release line, for example:composer require shopware/core:^6.4.18.1

Details

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

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References

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.