External risk intelligence

DB-GPT Directory Traversal Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.1)

CVE-2026-51862

The vulnerability exists in an API endpoint (agentic_data_api.py) within a data-focused application framework. Such platforms are commonly deployed as web services or API backends intended for external connectivity, making the affected interface a likely target for remote interaction in standard deployments.

Path Traversal

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 vulnerability has been identified in DB-GPT software, potentially allowing unauthorized remote access to write files. This issue affects how the application handles file uploads, creating a risk of data manipulation or unauthorized access if exploited. The main concern at this stage is confirming if this technology is in use and, if so, understanding the potential exposure.

  • Uncontrolled file uploads allow writing files anywhere.
  • Critical flaw could enable unauthorized remote access.
  • Confirm relevance and assess potential exposure.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending a specially crafted request to the affected application. This request would leverage a directory traversal flaw in the skill upload feature. Successful exploitation would allow the attacker to write files to arbitrary locations on the server, potentially overwriting critical system files or injecting malicious content.

  • No authentication required.
  • Uploading a malicious file.
  • Arbitrary file write on server.

Live Threat

Current exploitation, exposure, and threat context

A remote attacker could write files outside the intended storage area when supported by the advisory. This directory traversal vulnerability could allow an attacker to overwrite system files, potentially impacting the integrity and availability of the application's environment.

  • System files could be overwritten.
  • Attacker writes files outside storage boundary.
  • Application instability or data corruption.

Operational Fix

Recommended remediation, mitigation, and detection steps

Directory traversal in DB-GPT's skill upload functionality could allow remote attackers to write files outside designated boundaries. Owners of applications integrating DB-GPT, potentially platform or infrastructure teams, should first confirm the presence and exposure of this feature, assess business criticality, and identify the accountable owner. Remediation planning should then be based on this risk assessment.

  • Application owners should own this issue.
  • Verify external reachability and criticality first.
  • Plan remediation based on risk assessment.

Supplementary metadata

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.

Frequently asked questions

What is DB-GPT and what is it used for?

DB-GPT is an open-source framework designed for building database-powered applications and agentic workflows. It acts as an interface that allows users to interact with large language models and perform data tasks. Developers often use it to create intelligent systems that can process, query, and manage data autonomously through specialized API endpoints.

What does directory traversal mean in CVE-2026-51862?

Directory traversal is a weakness class, specifically CWE-22, where software fails to properly sanitize file paths. In this CVE, the vulnerability allows an attacker to manipulate input parameters during a file upload process. Instead of saving a file to a secure, designated folder, the flaw allows the software to write that file to unintended locations elsewhere on the server's filesystem.

How does an attacker trigger this vulnerability?

An attacker triggers the flaw by sending a specially crafted request to the skill_upload API endpoint. The vulnerability does not require authentication, meaning the attacker does not need to log in to the application to attempt the upload. Normal, non-malicious use of the skill upload feature—such as uploading legitimate data files intended for the application's workspace—does not inherently trigger this issue.

Is my instance of DB-GPT at risk?

Halo Surface Signal indicates that because this vulnerability exists within an API endpoint designed for data handling, it is a likely target for remote interaction. If your DB-GPT instance is configured as a web service or an API backend accessible from the internet, it is at higher risk. Instances confined to isolated, internal-only networks face a lower risk of external reachability.

What are the first steps to handle this risk?

Begin by inventorying your systems to confirm if and where DB-GPT 0.8.0 is deployed within your environment. Identify the specific teams managing these applications and verify if the affected skill upload feature is currently enabled or in use. Once identified, assess the criticality of these services to the business to prioritize the appropriate security measures.

References