External risk intelligence

Sequelize Oracle SQL Injection Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-69240

Sequelize is a library/ORM used within backend application code. While ORMs are commonly used in internet-facing web applications, the vulnerability requires specific configuration (Oracle dialect) and application-level handling of input to be reached. It is not an inherently internet-facing service or appliance itself, making public reachability dependent on specific application implementation.

SQL Injection

Halo Surface Signal: 3 out of 5 — possibly public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

Sequelize, a tool for Node.js applications, has a vulnerability that could allow attackers to inject malicious SQL code when processing specific string inputs with the Oracle database dialect. This could potentially lead to unauthorized access or modification of sensitive data.

SQL injection risk in Oracle database operations.
Affects applications using Sequelize with Oracle.
Confirm relevance and assess exposure for Oracle instances.

Attack Path

How an attacker could exploit the issue

An attacker could target applications using the Sequelize Node.js ORM with the Oracle dialect. If the application improperly handles string inputs that begin with `TO_TIMESTAMP` or `TO_DATE` when passing them to the `escape` function, the attacker can inject malicious SQL. This could allow them to manipulate database queries, potentially leading to unauthorized access, data modification, or disruption of service.

No authentication needed.
Vulnerable string input reaches escape function.
Arbitrary SQL injection risk.

Live Threat

Current exploitation, exposure, and threat context

When supported by the advisory, SQL injection is possible through application values that reach a specific escape path when the Oracle dialect is used. This could allow an attacker to inject arbitrary SQL expressions.

Affected: Application SQL queries.
How: User-supplied input to the escape function.
Consequence: Arbitrary SQL expression injection.

Operational Fix

Recommended remediation, mitigation, and detection steps

Real-world ownership of this vulnerability likely falls to application teams responsible for Node.js services utilizing the Sequelize ORM with an Oracle dialect. The first practical move is to identify all applications using this specific configuration, confirm their exposure and business criticality, and then coordinate remediation. Vendor management teams may also be involved if the affected applications are third-party.

Application teams own the fix.
Verify Oracle dialect usage.
Plan remediation for critical systems.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is Sequelize?

Sequelize is a popular Object-Relational Mapper (ORM) library for Node.js. Developers use it to simplify interactions between their backend applications and various database systems, allowing them to perform complex database operations using JavaScript rather than writing raw SQL queries manually.

What is the vulnerability in CVE-2026-69240?

This CVE involves a SQL injection weakness (CWE-89). It occurs because the library's internal escape function fails to sanitize certain input strings starting with specific Oracle database commands, such as TO_TIMESTAMP or TO_DATE. This flaw allows an attacker to bypass intended safety checks and inject unauthorized SQL commands directly into database queries.

How does an attacker trigger this SQL injection?

The flaw is triggered only when an application uses the Oracle dialect within Sequelize and processes user-supplied input that begins with the specific restricted terms. If your application does not use the Oracle database dialect, or if it does not pass user input starting with those specific strings into the vulnerable escape path, the application is not susceptible to this specific injection vector.

Is my application at risk?

Per Halo Surface Signal, risk depends on your specific implementation. While Sequelize is a library rather than a standalone service, any backend application using this ORM with the Oracle dialect may be reachable if the application itself is internet-facing. You should determine if your application code handles inputs that could reach this specific escape mechanism.

How do I respond to CVE-2026-69240?

The primary step is to audit your Node.js applications to identify those using Sequelize with an Oracle database connection. Once identified, prioritize updating the Sequelize library to version 6.37.4 or later, which contains the necessary security patch to properly sanitize these specific input strings.

References

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.