CVE-2025-13252: ShopSuite Auth Bypass Vulnerability

CVE-2025-13252 Overview

A hard-coded credentials vulnerability has been identified in shsuishang ShopSuite ModulithShop up to commit 45a99398cec3b7ad7ff9383694f0b53339f2d35a. This security flaw affects the RSA/OAuth2/Database component, where sensitive credentials are embedded directly in the application code. The vulnerability enables remote attackers to potentially gain unauthorized access to the system by exploiting these static credentials.

Critical Impact

Remote attackers can leverage hard-coded credentials to bypass authentication mechanisms and gain unauthorized access to RSA keys, OAuth2 tokens, or database connections within the ModulithShop application.

Affected Products

• shsuishang ShopSuite ModulithShop up to commit 45a99398cec3b7ad7ff9383694f0b53339f2d35a
• RSA/OAuth2/Database component within ModulithShop
• Rolling release versions (specific version information unavailable)

Discovery Timeline

• 2025-11-16 - CVE-2025-13252 published to NVD
• 2026-04-29 - Last updated in NVD database

Technical Details for CVE-2025-13252

Vulnerability Analysis

CVE-2025-13252 represents a hard-coded credentials vulnerability (CWE-259) in the ShopSuite ModulithShop e-commerce platform. The vulnerability resides within the RSA/OAuth2/Database component where authentication credentials have been embedded directly into the source code rather than being stored securely or retrieved from protected configuration sources.

This type of vulnerability is particularly dangerous in e-commerce applications as it can provide attackers with access to cryptographic keys used for secure communications, OAuth2 tokens that control API access, and database connection strings that may grant direct access to customer and transaction data.

The exploit has been publicly disclosed, increasing the risk of exploitation. Since ModulithShop uses a rolling release model, tracking affected versions becomes challenging, and organizations must verify their specific deployment against the vulnerable commit hash.

Root Cause

The root cause of this vulnerability is the use of hard-coded credentials within the application's RSA, OAuth2, and database components (CWE-259: Use of Hard-coded Password). Developers embedded sensitive authentication information directly in the source code, likely for convenience during development, but this practice creates a significant security risk when the code is deployed to production environments.

Hard-coded credentials cannot be easily rotated without code changes and redeployment, and if discovered by attackers, they remain valid indefinitely until the code is modified. Additionally, anyone with access to the source code repository can view these credentials.

Attack Vector

The attack can be executed remotely over the network without requiring prior authentication or user interaction. An attacker who discovers the hard-coded credentials can use them to authenticate to the system, potentially gaining access to:

• RSA private keys used for encryption and digital signatures
• OAuth2 client secrets enabling API access
• Database credentials providing direct data access

The exploitation methodology involves identifying the hard-coded credentials within the publicly available source code and then using these credentials to authenticate against the target ModulithShop installation.

Detection Methods for CVE-2025-13252

Indicators of Compromise

• Unusual authentication attempts using default or known hard-coded credential patterns
• Unexpected database connections from external IP addresses
• OAuth2 token usage from unrecognized sources or geographic locations
• RSA key operations that don't correspond to legitimate application activity

Detection Strategies

• Implement monitoring for authentication events that use the known hard-coded credentials
• Review source code repositories for commits containing the vulnerable code patterns
• Deploy network monitoring to detect unauthorized access to OAuth2 and database services
• Use static application security testing (SAST) tools to scan for hard-coded credentials

Monitoring Recommendations

• Enable detailed logging for all authentication attempts to RSA, OAuth2, and database components
• Configure alerts for successful authentications from unexpected IP ranges
• Monitor database query patterns for anomalous data access that may indicate credential compromise
• Review OAuth2 token issuance logs for suspicious activity patterns

How to Mitigate CVE-2025-13252

Immediate Actions Required

• Review your ModulithShop installation to determine if it includes the vulnerable commit
• Immediately rotate all RSA keys, OAuth2 secrets, and database credentials
• Implement network segmentation to limit access to sensitive backend services
• Monitor logs for any signs of credential abuse prior to remediation

Patch Information

Organizations should update to a version of ModulithShop that removes the hard-coded credentials. Due to the rolling release nature of this product, specific version numbers are unavailable. Check the GitHub Issue Discussion for the latest information on remediation.

After updating, ensure all credentials are regenerated and stored securely using environment variables, secrets management systems, or encrypted configuration files.

Workarounds

• Move all hard-coded credentials to secure external configuration sources such as environment variables or dedicated secrets management solutions
• Implement credential rotation policies and ensure RSA keys, OAuth2 secrets, and database passwords can be updated without code changes
• Apply network-level access controls to restrict which systems can connect to OAuth2 and database services
• Deploy a web application firewall (WAF) to monitor and filter suspicious authentication attempts

# Configuration example - Store credentials securely using environment variables
export MODULITHSHOP_DB_PASSWORD='$(vault read -field=password secret/modulithshop/database)'
export MODULITHSHOP_OAUTH2_SECRET='$(vault read -field=secret secret/modulithshop/oauth2)'
export MODULITHSHOP_RSA_PRIVATE_KEY_PATH='/etc/modulithshop/keys/private.pem'

# Ensure configuration files are not world-readable
chmod 600 /etc/modulithshop/config.yml
chown modulithshop:modulithshop /etc/modulithshop/config.yml