How severe is CVE-2019-12799?

CVE-2019-12799 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-12799 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 55% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12799?

CVE-2019-12799 affects Shopware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12799?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-12799 published?

CVE-2019-12799 was published on 2019-06-13 and last updated on 2026-06-17.

CVE-2019-12799

CVE-2019-12799 is a high-severity vulnerability in Shopware with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 55% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-502.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 55% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Shopware
Published: 2019-06-13
Last modified: 2026-06-17

Description

In createInstanceFromNamedArguments in Shopware through 5.6.x, a crafted web request can trigger a PHP object instantiation vulnerability, which can result in an arbitrary deserialization if the right class is instantiated. An attacker can leverage this deserialization to achieve remote code execution. NOTE: this issue is a bypass for a CVE-2017-18357 whitelist patch.

Frequently asked questions

What is CVE-2019-12799?: In createInstanceFromNamedArguments in Shopware through 5.6.x, a crafted web request can trigger a PHP object instantiation vulnerability, which can result in an arbitrary deserialization if the right class is instantiated. An attacker can leverage this deserialization to achieve remote code execution. NOTE: this issue is a bypass for a CVE-2017-18357 whitelist patch.
How severe is CVE-2019-12799?: CVE-2019-12799 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-12799 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 55% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12799?: CVE-2019-12799 affects Shopware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12799?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-12799 published?: CVE-2019-12799 was published on 2019-06-13 and last updated on 2026-06-17.

References

https://github.com/rapid7/metasploit-framework/pull/11828

Affected products (1)

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

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