CVE-2026-12206 Overview
CVE-2026-12206 is a SQL injection vulnerability affecting Grit42 Grit versions up to and including 0.11.0. The flaw resides in the Grit::Assays::DataTableEntity function within the modules/assays/backend/app/models/grit/assays/data_table_entity.rb source file. Improper neutralization of input passed to this function allows attackers to manipulate backend SQL queries. The issue is classified under [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component). The exploit is publicly disclosed, and according to the advisory, the vendor was contacted but did not respond.
Critical Impact
An authenticated remote attacker can inject SQL statements through the Data Table Entity endpoint, potentially exposing or modifying database contents.
Affected Products
- Grit42 Grit versions up to 0.11.0
- Component: Grit::Assays::DataTableEntity model
- File: modules/assays/backend/app/models/grit/assays/data_table_entity.rb
Discovery Timeline
- 2026-06-15 - CVE-2026-12206 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2026-12206
Vulnerability Analysis
The vulnerability is a SQL injection flaw in the Grit42 Grit assays backend module. The Grit::Assays::DataTableEntity model handles data table entity operations, and user-supplied input reaches the SQL query construction layer without proper sanitization or parameterization. Attackers with low-privilege authenticated access can craft malicious request parameters that alter the structure of executed SQL statements. The exploit is publicly available, which lowers the barrier for opportunistic attackers to weaponize it.
Root Cause
The root cause is improper neutralization of special elements within input passed to database query construction in the data_table_entity.rb file. When the application interpolates request parameters directly into SQL strings rather than using parameterized queries or an ORM-safe query interface, attacker-controlled characters such as quotes, semicolons, and SQL keywords break out of the intended query context. This permits arbitrary SQL fragments to execute within the application's database session.
Attack Vector
The attack is network-based and remote. An attacker requires low-level privileges, such as a standard authenticated user account, to reach the vulnerable Data Table Entity endpoint. No user interaction is required. Successful exploitation can lead to limited disclosure or modification of database records and availability impact. Refer to the GitHub Vulnerability Research Repository for the published proof-of-concept and request format.
Detection Methods for CVE-2026-12206
Indicators of Compromise
- HTTP requests targeting Data Table Entity endpoints containing SQL meta-characters such as ', --, UNION, SELECT, or OR 1=1 in parameter values.
- Database error messages or stack traces referencing Grit::Assays::DataTableEntity in application logs.
- Anomalous database query latency or unusually large result sets returned by the assays backend.
Detection Strategies
- Inspect web application logs and reverse proxy logs for parameter values containing SQL syntax sent to assay-related routes.
- Enable database query logging and review queries originating from the Grit assays backend for unexpected UNION, SLEEP, or stacked statements.
- Deploy web application firewall (WAF) rules with SQL injection signatures and tune them for the Grit Data Table Entity routes.
Monitoring Recommendations
- Alert on repeated 500-level responses from the assays module, which can indicate injection probing.
- Correlate authentication events with subsequent abnormal query patterns from the same session.
- Monitor outbound database traffic volume for sudden spikes consistent with bulk data extraction.
How to Mitigate CVE-2026-12206
Immediate Actions Required
- Restrict access to the Grit42 Grit assays backend to trusted networks or VPN-only access until a fix is available.
- Audit user accounts and revoke unnecessary access to the affected application.
- Deploy WAF rules to filter SQL injection patterns targeting the data_table_entity endpoint.
Patch Information
No vendor patch has been published. According to the advisory, the vendor was contacted before public disclosure but did not respond. Monitor the VulDB CVE-2026-12206 Entry and the Grit42 project channels for future updates beyond version 0.11.0.
Workarounds
- Apply network-level access controls to limit exposure of the assays backend to authenticated internal users only.
- Implement strict input validation at a reverse proxy or API gateway, rejecting parameters containing SQL meta-characters before requests reach the application.
- Configure the database account used by the application with least-privilege permissions, removing rights to schema modification and to tables outside the assays scope.
- Enable detailed audit logging on the database to support post-incident forensics if exploitation is suspected.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
