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EUVD-2026-199945

2026-10-08T03:29:47.625471+00:00

EUVD-2026-199945

fkie_cve-2023-34099

2026-10-08T03:29:47.625501+00:00

Shopware is an open source e-commerce software. The mail validation in the registration process had some flaws, so it was possible to construct different mail addresses, that in the end result in the same address, which is shared by multiple accounts. This issue has been addressed in version 5.7.18 and users are advised to update. There are no known workarounds for this vulnerability.

GHSA-gh66-fp7j-98v5 — Shopware improper mail validation vulnerability

2026-10-08T03:29:47.625532+00:00

Affected: Packagist: shopware/shopware

### Impact The mail validation in the registration process had some flaws, so it was possible to construct different mail addresses, that in the end result in the same address, which is shared by multiple accounts.

### Patches We recommend updating to the current version 5.7.18. You can get the update to 5.7.18 regularly via the Auto-Updater or directly via the release page. https://github.com/shopware5/shopware/releases/tag/v5.7.18

For older versions you can use the Security Plugin: https://store.shopware.com/en/swag575294366635f/shopware-security-plugin.html

### References https://docs.shopware.com/en/shopware-5-en/security-updates/security-update-06-2023

gsd-2023-34099

2026-10-08T03:29:47.625560+00:00

gsd-2023-34099