CVE-2023-34099 - CVE House
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Status published Medium CVE-2023-34099

Improper mail validation in Shopware

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from shopware

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CVE-2025-67648
Shopware's inproper input validation can lead to Reflected XSS through Storefront Login Page
High 7.1
CVE-2025-32378
Shopware's default newsletter opt-in settings allow for mass sign-up abuse
Medium 6.9
CVE-2025-30151
Shopware allows Denial Of Service via password length
High 7.5
CVE-2025-30150
Shopware 6 allows attackers to check for registered accounts through the store-api
Medium 5.5
CVE-2024-42357
Shopware vulnerable to blind SQL-injection in DAL aggregations
High 7.3

Affected Vendor

Affected Software

shopware
Vulnerable Versions:
< 5.7.18

Timeline

Official Publish: June 27th, 2023
Last Modified: November 7th, 2024
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weaknesses (CWE)

CWE-754

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1499 Endpoint Denial of Service
Impact
T1562 Impair Defenses
Defense Evasion
T1005 Data from Local System
Collection