How severe is CVE-2026-31888?

CVE-2026-31888 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-31888 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-31888?

CVE-2026-31888 affects Shopware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-31888?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-31888 have an EU (EUVD) identifier?

Yes. CVE-2026-31888 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11298.

When was CVE-2026-31888 published?

CVE-2026-31888 was published on 2026-03-11 and last updated on 2026-06-17.

CVE-2026-31888

CVE-2026-31888 is a medium-severity vulnerability in Shopware with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-204.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11298
Weakness: CWE-204
Affected product: Shopware
Published: 2026-03-11
Last modified: 2026-06-17

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-31888?: CVE-2026-31888 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-31888 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-31888?: CVE-2026-31888 affects Shopware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-31888?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-31888 have an EU (EUVD) identifier?: Yes. CVE-2026-31888 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11298.
When was CVE-2026-31888 published?: CVE-2026-31888 was published on 2026-03-11 and last updated on 2026-06-17.

References

https://github.com/shopware/shopware/security/advisories/GHSA-gqc5-xv7m-gcjq

Affected products (1)

cpe:2.3:a:shopware:shopware:*:*:*:*:*:*:*:*

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