Compliance Impact

This SQL injection vulnerability allows attackers to extract sensitive data including personal information and payment details from the affected system.

Exposure of such sensitive data can lead to violations of data protection regulations such as GDPR and HIPAA, which mandate the protection of personal and payment information.

Therefore, exploitation of this vulnerability could result in non-compliance with these common standards and regulations due to unauthorized data disclosure.

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Executive Summary

CVE-2026-8771 is a critical SQL injection vulnerability found in linlinjava litemall versions up to 1.8.0. It affects the front-end WeChat API, specifically the function list in the file WxGoodsController.java. The vulnerability arises because the 'sort' parameter is directly concatenated into an SQL ORDER BY clause without proper sanitization or validation.

This flaw allows attackers to perform SQL injection attacks remotely without needing admin authentication. Attackers can exploit this by manipulating the 'sort' parameter to inject malicious SQL commands, enabling various types of SQL injection such as error-based, boolean-based, and time-based blind SQL injection.

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Impact Analysis

This vulnerability can have severe impacts including unauthorized access to sensitive data. Exploits can extract admin password hashes, database version information, table names, and all user data, which may include personal information and payment details.

Because the vulnerability can be exploited remotely by any user without authentication, it poses a high risk of data breach, data loss, and potential compromise of the entire database.

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Detection Guidance

This vulnerability can be detected by testing the front-end API endpoint `/wx/goods/list` for SQL injection via the `sort` parameter. Since the parameter is directly concatenated into an SQL ORDER BY clause without sanitization, sending specially crafted payloads can reveal the vulnerability.

Common detection methods include error-based, boolean-based, and time-based blind SQL injection techniques targeting the `sort` parameter.

• Use curl or similar tools to send requests with SQL injection payloads in the `sort` parameter, for example: `curl 'http://target/wx/goods/list?sort=1'` and then try payloads like `sort=1 OR SLEEP(5)` to detect time delays.
• Use automated SQL injection detection tools such as sqlmap targeting the endpoint with the `sort` parameter to confirm the vulnerability.

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Mitigation Strategies

Immediate mitigation involves implementing strict whitelist validation for the `sort` and `order` parameters to prevent malicious input from being executed in SQL queries.

This can be done by using annotations like `@Sort` or server-side validation against a predefined list of allowed values, ensuring only safe sorting options are accepted.

Additionally, monitor and restrict access to the vulnerable endpoint and consider applying web application firewall (WAF) rules to block suspicious payloads targeting the `sort` parameter.

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