External risk intelligence

FinRobot Code Injection Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-51918

FinRobot is a library/framework for financial agents. While it may be integrated into internet-facing applications, the library itself is typically used as a backend component rather than a standalone edge service or public-facing gateway. Its reachability depends entirely on how a developer integrates the specific file-creation utility into their application architecture.

Code Injection

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

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This advisory details a critical vulnerability in FinRobot, a financial agent framework, related to its file creation utility. The issue could allow attackers to inject malicious code, potentially impacting the confidentiality, integrity, and availability of systems using this component. The main concern is confirming if and how FinRobot is utilized within our environment to assess potential exposure.

Code injection in file creation.
Potentially affects financial agent operations.
Understand FinRobot's use to confirm impact.

Attack Path

How an attacker could exploit the issue

An attacker could reach a vulnerable component in FinRobot by exploiting its network exposure. This would involve sending specially crafted input to the `create_file_with_code()` function, which is susceptible to code injection. If successful, this could allow an attacker to execute arbitrary code, potentially leading to significant system compromise.

Accessible over the network.
Malicious code sent to a file creation function.
Arbitrary code execution.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthenticated remote attacker to execute arbitrary code within the affected system when the `create_file_with_code()` function is utilized. This could lead to a compromise of the system's integrity and confidentiality.

Arbitrary code execution.
Network-based code injection.
Complete system compromise.

Operational Fix

Recommended remediation, mitigation, and detection steps

This critical vulnerability in FinRobot's file creation utility requires immediate attention from teams responsible for the application or system where FinRobot is integrated. The first practical step is to locate all instances of FinRobot, determine their exposure and business criticality, identify the accountable system owner, and then plan remediation based on the identified risk.

Application or platform owners should lead.
Verify FinRobot's reachability and criticality.
Plan remediation based on exposure and risk.

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.

Free EASM Trial See How Signal Works

Frequently asked questions

What is FinRobot?

FinRobot is a software framework and library designed to build autonomous financial agents. Developers integrate it into backend systems to automate complex financial tasks, such as market analysis or trade execution, rather than deploying it as a standalone user-facing application.

How does code injection work in CVE-2026-51918?

This vulnerability, classified as CWE-94, occurs when the software improperly handles inputs within its `create_file_with_code()` function. Because the component does not adequately filter or sanitize the data provided to this function, an attacker can supply malicious instructions that the system then writes to a file and inadvertently executes.

Does any input trigger this vulnerability?

No. The flaw is specifically tied to the `create_file_with_code()` function. It is only triggered if an attacker can send specially crafted, malicious input directly into this specific utility. If your application logic does not use this function, or if it strictly validates and restricts inputs before they reach it, the code injection path cannot be utilized.

How do I know if my system is at risk?

According to Halo Surface Signal, risk depends on how your developers integrated FinRobot. Because it acts as a backend library, it is rarely exposed directly to the internet. You should determine if your application uses the `create_file_with_code()` utility and whether that application is reachable over a network, as internal-only tools have a much smaller attack surface.

What should I do if we use FinRobot?

Begin by identifying every service or application in your environment that includes the FinRobot library. Once located, work with the system owners to confirm if the `create_file_with_code()` function is actively called. If it is, prioritize assessing the network access to those specific applications and plan to update or restrict the component as part of your risk management process.

References

github.com/AI4Finance-Foundation/FinRobot/issues/102

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.