Vulnerability in Shopware Core
CVE-2026-31888
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (25.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Shopware Core — versions >= 6.7.0.0, < 6.7.8.1, < 6.6.10.15
- Shopware Platform — versions >= 6.7.0.0, < 6.7.8.1, < 6.6.10.14
- Shopware
Weakness classification (CWE)
References
- github.com/shopware/shopware/security/advisories/GHSA-gqc5-xv7m-gcjq (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-31888?
- CVE-2026-31888 is a medium-severity vulnerability in Shopware Core, classified under Observable Response Discrepancy. CVSS score: 5.3/10. Published 2026-03-11.
- How severe is CVE-2026-31888?
- Medium severity. CVSS v3 base score is 5.3 out of 10.