CVE-2026-88402 in Nocobase
Summary
by MITRE • 09/22/2026
A SQL injection vulnerability in the checkSQL function of nocobase v2.1.21 allows attackers to access sesntive database information via injecting crafted SQL statements.
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Analysis
by VulDB Data Team • 09/22/2026
The identified security flaw resides within the checkSQL function of NocoBase version 2.1.21, representing a critical instance of improper input validation that leads directly to SQL injection. This vulnerability stems from the application's failure to adequately sanitize or parameterize user-supplied data before incorporating it into dynamically constructed database queries. When an attacker submits specially crafted SQL statements through inputs processed by this function, the backend system interprets these strings as executable code rather than static data. This fundamental breakdown in input handling allows malicious actors to manipulate the structure of legitimate database commands, effectively bypassing intended security controls and gaining unauthorized access to underlying data structures.
The operational impact of exploiting this vulnerability is severe, primarily centered on the compromise of sensitive database information. By leveraging SQL injection techniques such as UNION-based attacks or blind inference methods, an attacker can extract confidential records stored in the application's backend repository. This may include personally identifiable information, authentication credentials, proprietary business logic data, or other critical assets protected by the organization's security perimeter. The ability to read arbitrary data from the database undermines the confidentiality integrity of the entire system and can serve as a stepping stone for further exploitation, including privilege escalation or complete system compromise if combined with other vulnerabilities.
From an industry standard perspective, this vulnerability aligns closely with CWE-89, which classifies Improper Neutralization of Special Elements used in an SQL Command commonly known as SQL Injection. The attack vector typically falls under the MITRE ATT&CK framework category of T1190 Exploit Public-Facing Application, where adversaries leverage vulnerabilities in internet-facing software to gain initial access or escalate privileges within a network environment. Recognizing this classification is essential for security teams to prioritize remediation efforts and align their defensive strategies with established best practices for preventing injection-based attacks across web applications and API endpoints.
To mitigate this risk, immediate action must be taken by upgrading NocoBase to the latest patched version where the checkSQL function has been hardened against such injections. In environments where an upgrade is not immediately feasible, implementing a Web Application Firewall can provide a layer of defense by filtering out malicious SQL patterns in incoming requests before they reach the application logic. Additionally, developers should enforce strict input validation and utilize parameterized queries or prepared statements for all database interactions to ensure that user inputs are treated strictly as data rather than executable code. Regular security audits and static analysis tools focused on detecting injection flaws can further reduce the likelihood of similar vulnerabilities persisting in future releases.