CVE-2026-48013 in Shopware
Summary
by MITRE • 07/23/2026
Shopware is an open commerce platform. Prior to 6.6.10.18 and 6.7.10.1, the `/api/_action/media/external-link` endpoint allows authenticated admin users to make server-side HTTP HEAD requests to arbitrary internal IP addresses. While the parallel `uploadFromURL` flow validates target IPs against private/reserved ranges via `FileUrlValidator`, the `linkURL` flow only performs a URL format check (regex for `http://` or `https://` prefix), allowing SSRF to internal network services and cloud metadata endpoints. This issue is fixed in versions 6.6.10.18 and 6.7.10.1.
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Analysis
by VulDB Data Team • 07/23/2026
The vulnerability described represents a critical server-side request forgery flaw within the Shopware commerce platform that affects versions prior to 6.6.10.18 and 6.7.10.1. This issue stems from an inconsistent security validation approach between two similar API endpoints designed for media handling, specifically the `/api/_action/media/external-link` endpoint which allows authenticated administrative users to create links to external media resources. The flaw demonstrates a classic security oversight where different code paths within the same application module implement varying levels of input sanitization and validation controls.
The technical implementation of this vulnerability exploits a fundamental difference in how the platform validates URL inputs across its media handling workflows. While the `uploadFromURL` functionality properly implements IP address range validation through the `FileUrlValidator` component that explicitly blocks private and reserved IP ranges, the `linkURL` flow relies solely on basic regex pattern matching that only verifies the presence of `http://` or `https://` prefixes without any subsequent network address validation. This discrepancy creates an exploitable gap where authenticated administrators can craft malicious requests targeting internal network services including cloud metadata endpoints such as AWS metadata service at 169.254.169.254 or internal infrastructure services that should remain isolated from external access.
The operational impact of this vulnerability extends beyond simple information disclosure to potentially enable attackers with administrative access to perform reconnaissance and exploitation activities against internal network services. Attackers can leverage this flaw to discover running services on internal IP addresses, potentially accessing sensitive systems such as databases, internal APIs, or cloud instance metadata that contains credentials and configuration details. This capability significantly increases the attack surface for organizations using Shopware, particularly in environments where administrative access might be compromised or where the platform operates within complex network architectures containing multiple internal services.
From a cybersecurity framework perspective, this vulnerability maps directly to CWE-918, which specifically addresses Server-Side Request Forgery vulnerabilities, and aligns with ATT&CK technique T1071.004 for application layer protocols. The inconsistency in validation controls between similar functions violates the principle of least privilege and proper input validation practices that should be consistently applied across all API endpoints. Organizations should consider this vulnerability as a potential vector for lateral movement within networks, as it allows for the enumeration of internal services and could facilitate more sophisticated attacks including credential harvesting from cloud metadata services or direct exploitation of vulnerable internal systems.
The remediation strategy involves implementing consistent IP address validation across all media handling workflows, ensuring that both `uploadFromURL` and `linkURL` functions utilize the same validation mechanisms. This includes proper integration of the existing `FileUrlValidator` component into the `linkURL` flow to prevent requests to private or reserved IP ranges. Additionally, organizations should implement network segmentation controls and access restrictions for administrative interfaces to limit exposure even if such vulnerabilities are present in the codebase. Regular security audits and automated scanning of API endpoints for similar validation inconsistencies should be part of ongoing security maintenance processes to prevent recurrence of such issues in other platform components.