CVE-2025-67082: InvoicePlane SQL Injection Vulnerability

CVE-2025-67082 Overview

An SQL injection vulnerability has been identified in InvoicePlane through version 1.6.3. The vulnerability exists in the maxQuantity and minQuantity parameters when generating reports. An authenticated attacker can exploit this issue via error-based SQL injection, allowing for the extraction of arbitrary data from the database. The vulnerability arises from insufficient sanitization of single quotes in user-supplied input.

Critical Impact

Authenticated attackers can extract sensitive database contents including customer information, financial records, and potentially stored credentials through error-based SQL injection in the reporting functionality.

Affected Products

• InvoicePlane versions through 1.6.3
• All installations with report generation functionality enabled
• Systems where authenticated users have access to quantity-based reporting

Discovery Timeline

• January 15, 2026 - CVE-2025-67082 published to NVD
• January 22, 2026 - Last updated in NVD database

Technical Details for CVE-2025-67082

Vulnerability Analysis

This SQL injection vulnerability (CWE-89) affects the report generation functionality within InvoicePlane. The application fails to properly sanitize user input in the maxQuantity and minQuantity parameters before incorporating them into SQL queries. This allows authenticated users to inject malicious SQL statements that are then executed against the backend database.

The error-based nature of this SQL injection means that attackers can leverage database error messages to systematically extract data from the database. By crafting specific payloads that cause the database to return error messages containing sensitive information, an attacker can enumerate database structure, table names, column names, and ultimately extract arbitrary data.

Root Cause

The root cause of this vulnerability is insufficient input validation and improper handling of single quote characters in the maxQuantity and minQuantity parameters. When these parameters are processed during report generation, the application constructs SQL queries by directly concatenating user-supplied values without proper sanitization or parameterized queries. Single quotes are not properly escaped or filtered, allowing attackers to break out of the intended SQL context and inject arbitrary SQL commands.

Attack Vector

The attack requires network access and valid authentication credentials to the InvoicePlane application. Once authenticated, an attacker navigates to the report generation functionality and manipulates the maxQuantity or minQuantity parameters. By injecting SQL syntax including single quotes and SQL commands, the attacker can modify the query structure to extract data or cause intentional database errors that reveal information.

The error-based SQL injection technique involves crafting payloads that cause the database to include sensitive data within error messages. This is achieved by using SQL functions that generate errors when processing specific data types or by leveraging XML-based extraction methods depending on the underlying database system.

For detailed technical information about this vulnerability, refer to the Helx Blog Advisory and the GitHub InvoicePlane Repository.

Detection Methods for CVE-2025-67082

Indicators of Compromise

• Unusual SQL error messages appearing in web application or database logs during report generation
• Abnormal characters including single quotes, SQL keywords (UNION, SELECT, FROM), or XML functions in the maxQuantity or minQuantity request parameters
• Repeated requests to report generation endpoints with varying malformed parameters from the same authenticated user
• Database query logs showing unexpected query structures or error conditions during report operations

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect SQL injection patterns in HTTP request parameters, particularly targeting the maxQuantity and minQuantity fields
• Implement database activity monitoring to alert on unusual query patterns, error rates, or data access during report generation operations
• Configure application logging to capture and alert on malformed input validation failures in the reporting module
• Use SentinelOne Singularity to monitor for suspicious process behavior and potential post-exploitation activity following successful SQL injection attacks

Monitoring Recommendations

• Enable verbose logging for the InvoicePlane application and review logs for SQL-related errors or warnings
• Monitor database server logs for excessive error conditions or unusual query execution patterns
• Implement real-time alerting for any SQL syntax errors originating from the report generation functionality
• Track user activity patterns to identify authenticated accounts exhibiting reconnaissance behavior against reporting endpoints

How to Mitigate CVE-2025-67082

Immediate Actions Required

• Restrict access to the report generation functionality to only trusted administrative users until a patch is applied
• Implement input validation at the web application firewall level to block requests containing SQL injection patterns in quantity parameters
• Review and audit all user accounts with access to reporting features to ensure no unauthorized access exists
• Consider temporarily disabling the affected report generation functionality if it is not business-critical

Patch Information

At the time of publication, no official vendor patch has been confirmed. Organizations should monitor the GitHub InvoicePlane Repository for security updates and releases addressing this vulnerability. Review the Helx Blog Advisory for additional mitigation guidance and potential unofficial patches.

Workarounds

• Implement strict input validation on the maxQuantity and minQuantity parameters at the application level, allowing only numeric values
• Deploy a Web Application Firewall configured with SQL injection prevention rules specifically targeting the affected parameters
• Use database user permissions to restrict the application's database account to minimum required privileges, limiting potential data exposure from successful exploitation
• Apply network segmentation to limit which users can access the InvoicePlane reporting functionality

# Example WAF rule for ModSecurity to block SQL injection in quantity parameters
# Add to your ModSecurity configuration
SecRule ARGS:maxQuantity|ARGS:minQuantity "@detectSQLi" \
    "id:100001,\
    phase:2,\
    block,\
    msg:'SQL Injection Attempt Detected in Quantity Parameter - CVE-2025-67082',\
    log,\
    severity:CRITICAL"