CVE-2026-32100: Shopware Information Disclosure Flaw

CVE-2026-32100 Overview

CVE-2026-32100 is an Information Disclosure vulnerability affecting Shopware, an open commerce platform. The /api/_info/config route exposes sensitive information about active security fixes applied to the system, potentially allowing attackers to identify which vulnerabilities have been patched and which may still be exploitable on a given installation.

Critical Impact

Attackers can enumerate the security posture of Shopware installations by querying the exposed API endpoint, enabling targeted exploitation of unpatched vulnerabilities.

Affected Products

• Shopware versions prior to 2.0.16
• Shopware versions prior to 3.0.12
• Shopware versions prior to 4.0.7

Discovery Timeline

• 2026-03-12 - CVE CVE-2026-32100 published to NVD
• 2026-03-12 - Last updated in NVD database

Technical Details for CVE-2026-32100

Vulnerability Analysis

This vulnerability falls under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor). The issue stems from the /api/_info/config endpoint returning detailed information about which security fixes are currently active on a Shopware installation. This information exposure occurs over the network without requiring any authentication or user interaction, making it trivially exploitable by remote attackers.

The exposed security fix information provides attackers with a roadmap of the target's defensive posture. By knowing which patches have been applied, an attacker can determine which historical vulnerabilities remain unaddressed on a particular Shopware instance, significantly reducing the reconnaissance effort required for targeted attacks.

Root Cause

The root cause of this vulnerability is the lack of proper access controls on the /api/_info/config endpoint. Configuration endpoints that expose security-relevant information should require authentication and appropriate authorization checks. In this case, the endpoint was accessible without any authentication, allowing anyone with network access to query the security configuration of the Shopware installation.

Attack Vector

The attack vector is network-based and requires no privileges or user interaction. An attacker simply needs to send an HTTP request to the vulnerable endpoint to retrieve information about the target's security configuration.

The exploitation flow is straightforward:

1. Attacker identifies a Shopware installation
2. Attacker sends a request to /api/_info/config
3. The server responds with information about active security fixes
4. Attacker analyzes the response to identify unpatched vulnerabilities
5. Attacker crafts targeted exploits based on the discovered security gaps

For technical details on the vulnerability mechanism, refer to the GitHub Security Advisory.

Detection Methods for CVE-2026-32100

Indicators of Compromise

• Unusual or repeated requests to the /api/_info/config endpoint from external IP addresses
• Reconnaissance activity patterns targeting multiple Shopware API endpoints
• Requests to the config endpoint from IP addresses associated with known threat actors or scanning services

Detection Strategies

• Monitor web server access logs for requests to /api/_info/config from unauthorized sources
• Implement rate limiting and alerting on the configuration endpoint
• Deploy Web Application Firewall (WAF) rules to detect and block enumeration attempts against the API

Monitoring Recommendations

• Enable detailed logging for all API endpoints, particularly administrative and configuration routes
• Configure alerts for access patterns consistent with reconnaissance activity
• Integrate Shopware logs with your SIEM solution for correlation with other security events

How to Mitigate CVE-2026-32100

Immediate Actions Required

• Update Shopware to a patched version: 2.0.16, 3.0.12, or 4.0.7 depending on your major version
• Review access logs for any historical access to the /api/_info/config endpoint from untrusted sources
• If evidence of exploitation is found, conduct a thorough security assessment to identify any follow-on attacks

Patch Information

Shopware has released security patches addressing this vulnerability. Users should upgrade to the following versions or later:

• Version 2.0.16 for the 2.x branch
• Version 3.0.12 for the 3.x branch
• Version 4.0.7 for the 4.x branch

For complete patch details, see the GitHub Security Advisory.

Workarounds

• Restrict access to the /api/_info/config endpoint at the web server or reverse proxy level
• Implement network-level access controls to limit API access to trusted IP ranges
• Deploy a Web Application Firewall (WAF) to block unauthorized access to sensitive endpoints

# Example Nginx configuration to restrict access to the vulnerable endpoint
location /api/_info/config {
    # Allow access only from trusted internal networks
    allow 10.0.0.0/8;
    allow 192.168.0.0/16;
    deny all;
}