CVE-2026-88395 in GouGuOA
Summary
by MITRE • 10/05/2026
GouGuOA v6.0.5 and before is vulnerable to SQL Injection in /home/message/rubbish via the keywords parameter.
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Analysis
by VulDB Data Team • 10/05/2026
The vulnerability identified in GouGuOA version 6.0.5 and earlier represents a critical security flaw within its web-based office automation interface, specifically targeting the message management subsystem. This weakness manifests as an SQL Injection attack vector located at the /home/message/rubbish endpoint. The root cause lies in the improper handling of user-supplied input through the keywords parameter, which is likely used to filter or search items moved to a trash folder within the application's database backend. When this parameter receives data from external sources without adequate sanitization or validation against SQL metacharacters and syntax rules, it allows an attacker to inject malicious SQL commands into the query structure executed by the underlying database management system.
From a technical perspective, this flaw aligns with CWE-89, which classifies Improper Neutralization of Special Elements used in an SQL Command. The application fails to distinguish between code and data when processing the keywords input. Consequently, if an attacker submits a specially crafted string containing single quotes, semicolons, or UNION-based payloads, the database engine may interpret these elements as part of the executable query rather than literal search terms. This breakdown in input validation permits the manipulation of the SQL statement's logic, potentially altering its intended behavior to return unauthorized data, modify existing records, or even execute administrative commands depending on the privileges assigned to the database user account running the web application.
The operational impact of this vulnerability is severe due to the potential for full system compromise through data exfiltration and manipulation. An authenticated attacker can leverage this SQL Injection to extract sensitive information stored in the GouGuOA database, such as user credentials, personal identifiable information, internal communications, or proprietary business documents. Furthermore, depending on the specific capabilities of the underlying Database Management System and its configuration, advanced exploitation techniques could allow for remote code execution via features like xp_cmdshell in Microsoft SQL Server or LOAD_FILE functions in MySQL, thereby granting the attacker control over the server hosting the application. This aligns with MITRE ATT&CK technique T1059, Command and Scripting Interpreter, as well as T1078, Valid Accounts, if authentication is required to access the vulnerable endpoint.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. The primary fix involves upgrading GouGuOA to a version where this vulnerability has been patched by the vendor, ensuring that proper input validation mechanisms are in place. For systems unable to upgrade immediately, developers should implement parameterized queries or prepared statements for all database interactions involving user-supplied data, which inherently prevents SQL injection by separating code from data. Additionally, implementing strict input validation on the keywords parameter, including whitelisting allowed characters and encoding special symbols, can provide a layer of defense in depth. Network-level controls such as Web Application Firewalls should also be configured to detect and block common SQL Injection patterns targeting this specific endpoint until the software is updated.