CVE-2026-52673 Overview
CVE-2026-52673 is a SQL Injection vulnerability affecting Cboard version 0.4.2 and earlier. The flaw resides in the getDimensionsValues component, where unsanitized input is passed into database queries. A remote authenticated attacker can inject arbitrary SQL statements to read sensitive data from the backend database. The weakness is classified under CWE-89: Improper Neutralization of Special Elements used in an SQL Command.
Critical Impact
Authenticated remote attackers can extract confidential data from the Cboard database by manipulating parameters processed by the getDimensionsValues component.
Affected Products
- Cboard v0.4.2
- Cboard versions prior to 0.4.2
- Deployments exposing the getDimensionsValues component over the network
Discovery Timeline
- 2026-06-23 - CVE-2026-52673 published to NVD
- 2026-06-23 - Last updated in NVD database
Technical Details for CVE-2026-52673
Vulnerability Analysis
The vulnerability exists in the getDimensionsValues component of Cboard, an open-source business intelligence and reporting application. User-supplied parameters reach SQL query construction without proper parameterization or input sanitization. An attacker with low-privilege authenticated access submits a crafted request containing SQL metacharacters. The backend interpolates these characters directly into the query string, enabling injection.
Exploitation requires only network access and a low-privilege account. No user interaction is needed. Successful injection exposes the confidentiality of dimension data, reporting metadata, and any other tables the application service account can read. The CWE-89 categorization confirms the root issue is improper neutralization of SQL special elements.
Root Cause
The getDimensionsValues function concatenates request parameters into SQL statements rather than using parameterized queries or prepared statements. Cboard's data access layer lacks an input validation routine for dimension-value lookups, allowing reserved SQL syntax to pass through unchecked.
Attack Vector
The attack vector is network-based. An authenticated user issues a crafted HTTP request to the Cboard endpoint that invokes getDimensionsValues. The injected payload modifies the query logic, allowing the attacker to retrieve arbitrary database content through UNION-based or boolean-based techniques. Refer to the public proof-of-concept gist for technical detail on the request structure.
Detection Methods for CVE-2026-52673
Indicators of Compromise
- HTTP requests to Cboard endpoints invoking getDimensionsValues containing SQL metacharacters such as ', --, UNION, or SELECT
- Unexpected database errors or stack traces in Cboard application logs following dimension-value queries
- Anomalous read volume from the Cboard service database account against system or metadata tables
Detection Strategies
- Inspect web server and application logs for requests targeting the dimension-values API with encoded or unencoded SQL syntax
- Deploy web application firewall rules that flag SQL keywords appearing in parameters bound for getDimensionsValues
- Correlate authenticated user sessions with abnormal query patterns or error responses originating from the Cboard backend
Monitoring Recommendations
- Enable verbose query logging on the Cboard database and alert on syntax errors tied to the application user
- Track per-user request rates to dimension-values endpoints and flag outliers above baseline
- Forward Cboard application and database logs to a centralized analytics platform for retention and correlation
How to Mitigate CVE-2026-52673
Immediate Actions Required
- Restrict access to the Cboard application to trusted networks and authenticated users only
- Audit existing user accounts and revoke unnecessary privileges, especially accounts able to reach the dimension-values component
- Review database logs for prior signs of injection attempts targeting Cboard
Patch Information
No fixed version is referenced in the available NVD data at publication time. Monitor the Cboard project and the Chuguotech advisory page for an updated release that addresses the getDimensionsValues component.
Workarounds
- Place a web application firewall in front of Cboard with signatures that block SQL injection payloads against the dimension-values endpoint
- Limit the Cboard database account to read-only access on required tables to reduce the blast radius of injection
- Disable or network-restrict the getDimensionsValues endpoint until a vendor patch is installed
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
