What’s Vulnerable › Vulnerabilities
CVE-2026-31888: Shopware has user enumeration via distinct error codes on Store API login endpoint
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-03-11 · updated 2026-06-17
- Weakness: CWE-204
Description
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.
Affected products
- shopware: before 6.6.10.15; from 6.7.0.0 before 6.7.8.1 — fixed in 6.6.10.15, 6.7.8.1
How to fix
Upgrade to a fixed version: shopware 6.6.10.15, 6.7.8.1. Check the vendor advisory for mitigations.
References
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