CVE-2026-11391 Overview
CVE-2026-11391 is a SQL injection vulnerability [CWE-89] that Tanium addressed in its Patch product. The flaw allows an authenticated attacker with low privileges to inject SQL statements through the network attack vector without user interaction. Successful exploitation can lead to limited impact on confidentiality, integrity, and availability of the underlying database.
Tanium published details in security advisory TAN-2026-019 and released a fix for affected Patch deployments. No public proof-of-concept exploit code has been observed, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
Critical Impact
An authenticated attacker can manipulate SQL queries in the Tanium Patch module, potentially exposing or modifying database records used for endpoint patch management operations.
Affected Products
- Tanium Patch (see Tanium Security Advisory TAN-2026-019 for specific affected versions)
Discovery Timeline
- 2026-07-28 - CVE-2026-11391 published to the National Vulnerability Database (NVD)
- 2026-07-28 - Last updated in the NVD database
Technical Details for CVE-2026-11391
Vulnerability Analysis
CVE-2026-11391 is a SQL injection vulnerability in Tanium Patch. SQL injection [CWE-89] occurs when user-controllable input is concatenated into database queries without proper parameterization or sanitization. An attacker who supplies crafted input can alter the intended query logic and interact with the database beyond the application's design boundaries.
The vulnerability requires network access to the Patch interface and low-level authenticated privileges. No user interaction is required to trigger the injection path. The scope remains unchanged, meaning the impact is contained within the vulnerable component's security boundary.
Within Tanium Patch, database records support endpoint patch policies, deployment schedules, and inventory data. Manipulating these records can influence patch operations across managed endpoints, though the impact metrics indicate the exposure is limited rather than full database compromise.
Root Cause
The root cause is improper neutralization of special elements used in an SQL command. Input received by the Patch component was incorporated into database queries without the safeguards required to prevent injection, such as prepared statements or strict input validation.
Attack Vector
An authenticated user with low privileges sends crafted input through a Patch interface parameter that reaches a vulnerable SQL query construction path. The injected payload modifies the executed statement, allowing the attacker to read, alter, or interfere with data accessible to the Patch database context. Refer to the Tanium Security Advisory TAN-2026-019 for vendor-specific technical details.
Detection Methods for CVE-2026-11391
Indicators of Compromise
- Unusual SQL syntax patterns (for example, UNION, --, ;, OR 1=1) appearing in Tanium Patch application logs or request parameters
- Unexpected database errors or query timeouts originating from the Patch module
- Authenticated Patch users issuing high volumes of requests with anomalous input structure
Detection Strategies
- Review Tanium Patch and underlying database logs for query patterns that deviate from expected application behavior
- Correlate authenticated Patch console activity with database query anomalies to identify potential injection attempts
- Apply web application firewall (WAF) or reverse proxy rules to inspect Patch traffic for SQL injection signatures
Monitoring Recommendations
- Enable verbose application-level logging for the Tanium Patch module and forward logs to a centralized SIEM for correlation
- Alert on failed database queries and error responses tied to Patch API endpoints
- Track privilege changes and account activity for users with access to the Patch console
How to Mitigate CVE-2026-11391
Immediate Actions Required
- Apply the security update referenced in Tanium Security Advisory TAN-2026-019 to affected Tanium Patch deployments
- Audit accounts with access to the Patch module and remove unnecessary privileges to reduce the pool of potential attackers
- Review recent Patch and database activity for signs of exploitation prior to patching
Patch Information
Tanium has released a fix addressing the SQL injection vulnerability in Patch. Consult the Tanium Security Advisory TAN-2026-019 for the specific fixed versions and upgrade guidance. Apply the vendor-supplied update through standard Tanium change management procedures.
Workarounds
- Restrict network access to the Tanium Patch interface to trusted administrative networks until the patch is deployed
- Enforce least-privilege role assignments within Tanium to limit which accounts can interact with Patch functionality
- Monitor authentication events for the Tanium console and revoke unused or stale credentials
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
