CVE-2026-7060: liyupi yu-picture SQL Injection Vulnerability

CVE-2026-7060 Overview

A SQL injection vulnerability has been identified in liyupi yu-picture, an open-source picture management application. The vulnerability exists in the PageRequest function within the PictureServiceImpl.java file of the MyBatis-Plus component. Remote attackers can exploit this flaw by manipulating the sortField argument to inject malicious SQL queries, potentially leading to unauthorized data access, modification, or deletion.

Critical Impact
This SQL injection vulnerability allows remote attackers to manipulate database queries through the sortField parameter, potentially compromising the confidentiality, integrity, and availability of application data stored in the backend database.

Affected Products

liyupi yu-picture (commit a053632c41340152bf75b66b3c543d129123d8ec and prior)
yu-picture-backend component utilizing MyBatis-Plus
Any deployment using the vulnerable PictureServiceImpl.java implementation

Discovery Timeline

2026-04-26 - CVE-2026-7060 published to NVD
2026-04-29 - Last updated in NVD database

Technical Details for CVE-2026-7060

Vulnerability Analysis

The vulnerability resides in the PageRequest function within the yu-picture-backend/src/main/java/com/yupi/yupicturebackend/service/impl/PictureServiceImpl.java file. The application fails to properly sanitize the sortField argument before incorporating it into SQL queries executed through the MyBatis-Plus framework. This improper input validation allows attackers to inject arbitrary SQL commands that are subsequently executed against the backend database.

The exploit has been publicly disclosed and may be utilized by threat actors. The project maintainers were informed of the vulnerability through a pull request (GitHub Pull Request #3) but have not yet responded or implemented a fix. This lack of versioning in the project makes it difficult to track affected and unaffected releases.

Root Cause

The root cause of this vulnerability is improper input validation and sanitization (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component). The sortField parameter is directly incorporated into SQL queries without proper validation, parameterization, or escaping. When using MyBatis-Plus dynamic sorting functionality, user-controlled input should never be directly concatenated into SQL statements without strict allowlist validation of acceptable column names.

Attack Vector

The attack can be launched remotely over the network without requiring authentication or user interaction. An attacker can craft malicious HTTP requests containing SQL injection payloads in the sortField parameter. When the application processes these requests, the injected SQL code is executed against the database.

The vulnerable code path involves the PageRequest handling mechanism where the sort field value is passed directly to MyBatis-Plus query construction. Attackers can leverage techniques such as ORDER BY injection or UNION-based injection to extract sensitive data, modify records, or potentially achieve remote code execution depending on database permissions and configuration.

Detection Methods for CVE-2026-7060

Indicators of Compromise

Unusual SQL syntax or injection patterns appearing in the sortField parameter of HTTP requests
Database error messages in application logs indicating malformed ORDER BY clauses
Unexpected database queries containing UNION SELECT, subqueries, or comment sequences
Evidence of data exfiltration or unauthorized database access in audit logs

Detection Strategies

Implement web application firewall (WAF) rules to detect SQL injection patterns in request parameters
Monitor application logs for SQL syntax errors or database exceptions related to sorting operations
Deploy intrusion detection systems (IDS) with signatures for common SQL injection attack patterns
Review HTTP access logs for requests containing encoded special characters in the sortField parameter

Monitoring Recommendations

Enable detailed logging for the PictureServiceImpl class and related database operations
Configure database audit logging to capture all queries executed against the picture tables
Set up alerts for anomalous query patterns or database error rate spikes
Monitor for reconnaissance activities targeting the sorting functionality

How to Mitigate CVE-2026-7060

Immediate Actions Required

Review and apply the patch provided in GitHub Pull Request #3
Implement input validation to whitelist allowed column names for the sortField parameter
Deploy web application firewall rules to block SQL injection attempts
Restrict database user permissions to minimize potential impact of successful exploitation
Audit database logs for evidence of prior exploitation attempts

Patch Information

A patch has been submitted via GitHub Pull Request #3 but has not been officially merged by the project maintainers. Organizations using this software should manually review and apply the proposed fix or implement their own remediation. Additional technical details are available in GitHub Issue #4 and the VulDB vulnerability entry.

Workarounds

Implement a strict allowlist of valid column names that can be used for sorting operations
Use parameterized queries or prepared statements for all database interactions
Add input validation middleware to reject requests with suspicious characters in the sortField parameter
Consider disabling the sorting functionality temporarily until a proper fix is implemented
Implement rate limiting on API endpoints to slow down potential exploitation attempts

bash

# Example configuration for input validation (conceptual)
# Add to application configuration to define allowed sort fields
ALLOWED_SORT_FIELDS="id,name,createTime,updateTime,size"

# Example WAF rule pattern for SQL injection detection
# Block requests containing common SQL injection patterns in sortField parameter
# Pattern: sortField parameter containing: ', --, ;, UNION, SELECT, DROP, INSERT