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CVE-2017-18357

57
FAUCET Score

CVE-2017-18357 is a PHP Object Instantiation vulnerability affecting Shopware versions prior to 5.3.4, specifically within the loadPreviewAction() method of the Shopware_Controllers_Backend_ProductStream controller. This medium-severity vulnerability (CVSS 6.5) allows an authenticated attacker to achieve XML External Entity (XXE) injection, potentially leading to information disclosure. While not observed in active exploitation, a Metasploit module exists, indicating readily available exploit code and a high FAUCET Risk Score of 98/100, despite minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.3.4CPE matchmatch criteria
cpe:2.3:a:shopware:shopware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
27.07%
Probability of exploitation in next 30 days
EPSS Percentile
97.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: Shopware createInstanceFromNamedArguments PHP Object Instantiation RCE · May 9, 2019
ExploitDB: EDB-46915 · May 23, 2019
This CVE's current EPSS score of 0.2707 is in the 99th percentile among its peer group of 21,951 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

composerpatch availablevia ghsa
Product: shopware/shopwareFixed in: 5.3.4

Vendor Advisories (1)

composerGHSA-6m27-7cqj-2mxwmedium

Shopware XXE Vulnerability

May 14, 2022

References

packetstormsecurity.com / files/152995/Shopware-createInstanceFromNamedArguments-PHP-Object-Instantiation.html
blog.ripstech.com / 2017/shopware-php-object-instantiation-to-blind-xxe
ExploitThird Party Advisory
demo.ripstech.com / projects/shopware_5.3.3
Third Party Advisory