CVE-2026-69636 in SharePoint
Summary
by MITRE • 09/09/2026
Improper neutralization of special elements used in an sql command ('sql injection') in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.
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Analysis
by VulDB Data Team • 09/09/2026
The vulnerability described constitutes a classic SQL Injection flaw within the Microsoft Office SharePoint environment, specifically categorized under CWE-89: Improper Neutralization of Special Elements used in an SQL Command. This security defect arises from insufficient validation or sanitization of user-supplied input before it is incorporated into dynamic SQL queries executed by the backend database system. In this context, an attacker who has already obtained valid authentication credentials can manipulate these inputs to alter the logic of the underlying database commands. Unlike unauthenticated remote code execution vulnerabilities that allow immediate compromise without prior access, this flaw requires a foothold within the application's user space, yet it significantly escalates the risk profile for any authenticated session by providing a direct pathway to interact with the persistent data store at an elevated privilege level relative to the web application account.
From an operational perspective, the impact of this vulnerability is severe due to the potential for unauthorized information disclosure. By injecting malicious SQL syntax, such as UNION-based attacks or error-based extraction techniques, an attacker can extract sensitive data stored in the SharePoint database that should remain inaccessible through normal user interfaces. This may include confidential documents, metadata, configuration settings, and potentially credential hashes if they are stored within the same database schema. The ability to read arbitrary rows from tables allows for systematic enumeration of the entire dataset, leading to a complete breach of confidentiality for the organization's content managed by SharePoint. Furthermore, depending on the specific SQL dialect and permissions granted to the application account, there may be potential for data modification or deletion, although the primary vector described focuses on disclosure over a network.
This vulnerability aligns with several techniques in the MITRE ATT&CK framework, particularly T1059: Command and Scripting Interpreter when considering how injected commands are processed by the database engine, and more specifically T1213: Data from Information Repositories for the extraction phase of the attack lifecycle. The exploitation process typically involves identifying input vectors such as query parameters in URLs or form fields that are reflected into SQL statements without proper parameterization. Once a vulnerable point is identified, the attacker crafts payloads designed to bypass existing filters and execute arbitrary queries against the database server. This allows the attacker to retrieve data from tables outside their intended scope, effectively breaking down logical access controls enforced by the application layer.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term architectural improvements. The most effective technical fix is the implementation of parameterized queries or prepared statements within all database interaction code paths involving user input. This ensures that data values are treated strictly as parameters rather than executable SQL code, neutralizing injection attempts regardless of their content. Additionally, developers should enforce strict input validation using allow-listing techniques to reject any characters or patterns not explicitly required for the application's function. On a broader infrastructure level, applying the latest security patches provided by Microsoft is critical, as vendors often release updates that address known SQL Injection vectors in specific SharePoint components. Furthermore, deploying Web Application Firewalls can provide an additional layer of defense by detecting and blocking common SQL injection signatures before they reach the application logic, although this should be viewed as a compensating control rather than a primary solution. Regular security code reviews and automated static analysis tools focused on data flow taint tracking are also essential to identify similar vulnerabilities across the SharePoint deployment.