Shopware up to 6.6.10.15/6.7.8.1 Store API Logendpoint /store-api/account/login response discrepancy

Summaryinfo

A vulnerability categorized as problematic has been discovered in Shopware up to 6.6.10.15/6.7.8.1. This vulnerability affects unknown code of the file /store-api/account/login of the component Store API Logendpoint. Such manipulation leads to response discrepancy. This vulnerability is referenced as CVE-2026-31888. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Shopware up to 6.6.10.15/6.7.8.1. It has been rated as problematic. Affected by this issue is an unknown functionality of the file /store-api/account/login of the component Store API Logendpoint. The manipulation with an unknown input leads to a response discrepancy vulnerability. Using CWE to declare the problem leads to CWE-204. The product provides different responses to incoming requests in a way that reveals internal state information to an unauthorized actor outside of the intended control sphere. Impacted is confidentiality. CVE summarizes:

Shopware is an open commerce platform. Prior to 6.7.8.1 and 6.6.10.15, the Store API login endpoint (POST /store-api/account/login) returns different error codes depending on whether the submitted email address belongs to a registered customer (CHECKOUT__CUSTOMER_AUTH_BAD_CREDENTIALS) or is unknown (CHECKOUT__CUSTOMER_NOT_FOUND). The "not found" response also echoes the probed email address. This allows an unauthenticated attacker to enumerate valid customer accounts. The storefront login controller correctly unifies both error paths, but the Store API does not — indicating an inconsistent defense. This vulnerability is fixed in 6.7.8.1 and 6.6.10.15.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-31888 since 03/09/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

Upgrading to version 6.6.10.15 or 6.7.8.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-11298). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• Shopware

Version

• 6.6.10.0
• 6.6.10.1
• 6.6.10.2
• 6.6.10.3
• 6.6.10.4
• 6.6.10.5
• 6.6.10.6
• 6.6.10.7
• 6.6.10.8
• 6.6.10.9
• 6.6.10.10
• 6.6.10.11
• 6.6.10.12
• 6.6.10.13
• 6.6.10.14
• 6.6.10.15
• 6.7.8.0
• 6.7.8.1

License

• commercial

Website

• Product: https://github.com/shopware/shopware/

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Once again VulDB remains the best source for vulnerability data.

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