Executive Summary

CVE-2026-2852 is a critical access control vulnerability in the yeqifu warehouse project, specifically affecting the Sales Endpoint component within the SalesController.java file. The vulnerability impacts the addSales, updateSales, and deleteSales functions by lacking proper authorization checks.

This flaw allows unauthorized users to remotely manipulate sales records, including forging new sales, updating existing ones, or deleting legitimate sales data without permission. The issue arises because the affected methods do not verify if the user has the necessary permissions before performing these operations.

The vulnerability corresponds to improper access control (CWE-284 and CWE-266) and is exploitable remotely with publicly available proof-of-concept exploits.

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Impact Analysis

This vulnerability can severely impact your system by allowing attackers to manipulate sales and salesback data without authorization.

• Attackers can forge sales or return records.
• They can delete legitimate sales or return records.
• Manipulation of revenue and stock data is possible.

These actions compromise accounting accuracy and the integrity of business reporting, potentially leading to financial losses and operational disruptions.

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Compliance Impact

I don't know

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Detection Guidance

[{'type': 'paragraph', 'content': 'This vulnerability can be detected by monitoring for unauthorized or suspicious HTTP POST requests to the affected endpoints, such as /sales/addSales, /sales/updateSales, and /sales/deleteSales, especially those that manipulate sales data without proper authorization.'}, {'type': 'paragraph', 'content': 'A practical detection method is to inspect web server logs or use network monitoring tools to identify POST requests to these endpoints with unusual or unexpected parameters.'}, {'type': 'paragraph', 'content': 'For example, you can use the following command to search for suspicious POST requests in your web server logs (assuming logs are in access.log):'}, {'type': 'list_item', 'content': "grep -i 'POST /sales/addSales' access.log"}, {'type': 'list_item', 'content': "grep -i 'POST /sales/updateSales' access.log"}, {'type': 'list_item', 'content': "grep -i 'POST /sales/deleteSales' access.log"}, {'type': 'paragraph', 'content': 'Additionally, monitoring for session cookies used in these requests can help identify unauthorized access attempts.'}, {'type': 'paragraph', 'content': 'Network intrusion detection systems (NIDS) can be configured to alert on these specific HTTP requests if signatures or rules are created based on the publicly available proof-of-concept exploit.'}] [3]

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Mitigation Strategies

Immediate mitigation steps include implementing strict role-based access control (RBAC) on the affected endpoints to ensure that only authorized users can perform add, update, or delete operations on sales and salesback records.

Validate record ownership and workflow states before allowing modifications to prevent unauthorized manipulation.

Ensure comprehensive logging of all changes for audit purposes to detect and investigate unauthorized activities.

If immediate code changes are not possible, consider restricting access to the affected endpoints via network controls such as firewalls or API gateways to limit exposure.

Since no official patches or fixes have been released, consider replacing the affected component with an alternative product if feasible.

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