CVE-2026-5328 Overview
A SQL injection vulnerability has been identified in shsuishang modulithshop, affecting the listItem function within the file src/main/java/com/suisung/shopsuite/pt/service/impl/ProductIndexServiceImpl.java. The vulnerability exists in the ProductItemDao Interface component, where manipulation of the sidx and sort arguments allows an attacker to inject malicious SQL statements. This vulnerability can be exploited remotely over the network by authenticated users, potentially compromising the confidentiality, integrity, and availability of the underlying database.
Critical Impact
Remote attackers with low privileges can exploit this SQL injection vulnerability to extract sensitive data, modify database records, or disrupt service availability through the ProductItemDao Interface.
Affected Products
- shsuishang modulithshop (up to commit 829bac71f507e84684c782b9b062b8bf3b5585d6)
Discovery Timeline
- 2026-04-02 - CVE CVE-2026-5328 published to NVD
- 2026-04-02 - Last updated in NVD database
Technical Details for CVE-2026-5328
Vulnerability Analysis
This SQL injection vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component) occurs in the ProductIndexServiceImpl.java file, specifically within the listItem function. The vulnerability stems from improper handling of user-supplied input in the sidx and sort parameters, which are used to construct SQL queries for product listing and sorting operations.
When user input is passed directly into SQL query construction without proper parameterization or sanitization, attackers can craft malicious input that breaks out of the intended query structure. This allows execution of arbitrary SQL commands against the underlying database. The attack can be performed remotely, requiring only low-level privileges, making it accessible to authenticated users of the application.
Root Cause
The root cause is insufficient input validation and lack of parameterized queries in the ProductItemDao interface implementation. The sidx (sort index) and sort (sort direction) parameters are concatenated directly into SQL queries without proper escaping or use of prepared statements. This classic SQL injection pattern allows attackers to inject SQL syntax through these sorting-related parameters, which are often overlooked during security reviews since developers may assume sorting fields are system-controlled rather than user-influenced.
Attack Vector
The vulnerability is exploitable over the network by authenticated attackers. The attack targets the product listing functionality through the sidx and sort parameters in the ProductIndexServiceImpl.listItem() method. An attacker can manipulate these sorting parameters in HTTP requests to inject SQL commands. Since the application uses a rolling release model, all deployments prior to commit 42bcb9463425d1be906c3b290cf29885eb5a2324 are vulnerable.
The exploitation technique involves injecting SQL syntax into the sorting parameters. For example, instead of legitimate values like product_id and ASC, an attacker could supply SQL payloads that manipulate the ORDER BY clause or break out of it entirely to execute additional SQL statements. The exploit has been publicly disclosed, increasing the risk of active exploitation.
Detection Methods for CVE-2026-5328
Indicators of Compromise
- Unusual SQL syntax appearing in web application logs, particularly in requests to product listing endpoints
- Database query logs showing ORDER BY clauses with unexpected SQL keywords or special characters
- Error messages in application logs indicating SQL syntax errors from the ProductIndexServiceImpl component
- Abnormal database queries containing UNION, SELECT, or comment sequences (-- or /*) in sorting parameters
Detection Strategies
- Implement Web Application Firewall (WAF) rules to detect SQL injection patterns in the sidx and sort parameters
- Monitor application logs for requests containing SQL metacharacters such as single quotes, semicolons, or SQL keywords in sorting fields
- Deploy runtime application self-protection (RASP) to detect and block SQL injection attempts at the application layer
- Enable database query auditing to identify anomalous query patterns originating from the product listing functionality
Monitoring Recommendations
- Configure alerting for SQL syntax errors in database logs that correlate with ProductIndexServiceImpl requests
- Monitor for unusual data access patterns or large data exports that may indicate successful SQL injection exploitation
- Review authentication logs for accounts making repeated requests with varying sidx/sort values, which may indicate injection testing
- Implement anomaly detection for database query execution times that deviate significantly from normal patterns
How to Mitigate CVE-2026-5328
Immediate Actions Required
- Apply the security patch (commit 42bcb9463425d1be906c3b290cf29885eb5a2324) immediately
- Review database logs for evidence of exploitation attempts against the product listing functionality
- Implement input validation for the sidx and sort parameters as a defense-in-depth measure
- Consider temporarily restricting access to product listing features if patching is delayed
Patch Information
A patch is available and should be applied to remediate this vulnerability. The fix is contained in commit 42bcb9463425d1be906c3b290cf29885eb5a2324. Since modulithshop uses a rolling release model, organizations should update to the latest version that includes this commit. For detailed patch information, refer to the GitHub Commit Details and the GitHub Issue Tracker.
Workarounds
- Implement a whitelist of allowed values for the sidx parameter, permitting only known column names
- Restrict the sort parameter to only accept ASC or DESC values through application-level validation
- Deploy a Web Application Firewall with SQL injection detection rules in front of the application
- If feasible, restrict access to the product listing functionality to trusted users until the patch can be applied
# Example WAF rule concept for blocking SQL injection in sort parameters
# Implement input validation at the application or reverse proxy level
# Block requests containing SQL keywords in sidx/sort parameters:
# - UNION, SELECT, INSERT, UPDATE, DELETE, DROP
# - Comment sequences: --, /*, #
# - Semicolons and other SQL metacharacters
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
