External risk intelligence

SQL Injection Vulnerability Allows Remote Code Execution

CVE advisorySeverity: CRITICAL (CVSS 9.4)

CVE-2026-89310

The vulnerability involves SQL injection via request body parameters in a web application. Such applications are commonly deployed as internet-facing services or APIs, making them reachable and exposed to remote attackers.

SQL Injection

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical security vulnerability has been identified in certain database query processing, allowing remote attackers to execute unauthorized SQL commands. This occurs when data from a request is directly inserted into a T-SQL statement without proper handling, potentially compromising the application's database. The main concern is confirming relevance and exposure of this type of database interaction.

Unsanitized input allows attackers to run database commands.
Leadership should remember risks to sensitive data.
Confirm if our systems process unsanitized database inputs.

Attack Path

How an attacker could exploit the issue

An attacker can exploit this vulnerability by sending specially crafted requests to a web application. If the application processes a parameter from the request body without proper sanitization, the attacker can inject malicious SQL code. This can allow them to execute arbitrary commands on the application's database, potentially leading to unauthorized access and modification of sensitive data.

Requires network access and some privileges.
Vulnerable parameter in request body.
Database compromise and data manipulation.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthenticated remote attacker to execute arbitrary SQL commands on the application's database. When supported, this could affect system and user data accessible by the application's database account.

System and user data could be impacted.
SQL injection via request body.
Data exfiltration or modification may occur.

Operational Fix

Recommended remediation, mitigation, and detection steps

This SQL injection vulnerability likely impacts applications that process data from the request body and interact with a T-SQL database. Ownership typically falls to the application owners, with support from platform or infrastructure teams responsible for the underlying database and T-SQL environment. The first practical step is to inventory all such applications, confirm their external reachability and criticality, and then identify the accountable application owner to prioritize and plan remediation efforts.

Application owners should manage the issue.
Verify application reachability and criticality.
Plan T-SQL database remediation.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is the software affected by CVE-2026-89310?

This CVE impacts software that uses T-SQL, a dialect of SQL primarily used with Microsoft SQL Server, to manage data. These applications often act as bridges between web users and backend databases, handling incoming requests to retrieve, update, or store information. Because T-SQL is central to how these applications interact with data storage, a flaw in how they construct queries can have significant consequences for the entire application stack.

What does SQL injection mean for this vulnerability?

This vulnerability is classified as CWE-89, or Improper Neutralization of Special Elements used in an SQL Command. In plain terms, the application takes input from a user's request and inserts it directly into a database command without checking it first. Because the application does not distinguish between the intended data and malicious instructions, an attacker can append their own commands to the query, tricking the database into performing unauthorized actions.

How does an attacker trigger CVE-2026-89310?

An attacker triggers this by sending a specially crafted request containing malicious SQL code within the request body. This vulnerability requires the application to process that specific input as part of a T-SQL statement. Notably, simply browsing a website or visiting a static page that does not process dynamic request body parameters for database queries will not trigger this bug; the interaction must involve a vulnerable data-processing pathway.

Is my system at risk according to Halo Surface Signal?

Halo Surface Signal identifies this as a 'Likely' risk for services that are internet-facing. Because this vulnerability involves request body parameters in web applications, any component reachable from the public internet is at a higher risk of being targeted by remote attackers. You should prioritize assessing applications that are exposed externally, as these are the most accessible paths for an attacker to interact with the database.

What is the first step to address this issue?

Your first step is to conduct an inventory to identify which of your applications process request body parameters and interact with a T-SQL database. Once you have identified these specific applications, determine which ones are reachable over the network and assess their data criticality. Establishing clear ownership for these systems is essential to coordinating the necessary technical review and remediation efforts.

References

www.jtl-software.com/de/cve-2026-89309-cve-2026-89310

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.