How severe is CVE-2023-34099?

CVE-2023-34099 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 none, integrity low, and availability none.

Is CVE-2023-34099 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-34099?

CVE-2023-34099 affects Shopware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-34099?

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

When was CVE-2023-34099 published?

CVE-2023-34099 was published on 2023-06-27 and last updated on 2026-06-17.

CVE-2023-34099

CVE-2023-34099 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-754.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-754
Affected product: Shopware
Published: 2023-06-27
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2023-34099?: 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.
How severe is CVE-2023-34099?: CVE-2023-34099 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 none, integrity low, and availability none.
Is CVE-2023-34099 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-34099?: CVE-2023-34099 affects Shopware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-34099?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-34099 published?: CVE-2023-34099 was published on 2023-06-27 and last updated on 2026-06-17.

References

Affected products (1)

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

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