External risk intelligence

PraisonAI UI Unauthenticated Command Injection

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-57124

The application is a web-based UI system that binds to 0.0.0.0 by default, exposing an unauthenticated API endpoint directly to the network. Since this service is designed to be a reachable interface and defaults to listening on all network interfaces, it is inherently exposed to the internet or wide network segments in standard deployment configurations.

OS Command Injection

Halo Surface Signal: 5 out of 5 — more 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 the PraisonAI multi-agent teams system, specifically in its UI host applications. This issue allows unauthenticated access to execute commands on the affected systems, potentially leading to a compromise of the service account. The primary concern is to confirm if this technology is in use and if it is exposed.

Unauthenticated commands can be run remotely.
Matters if using this team collaboration system.
Confirm relevance and exposure; address if impacted.

Attack Path

How an attacker could exploit the issue

An attacker can reach the PraisonAI UI from the network and send unauthenticated requests to an API endpoint. This endpoint accepts commands and arguments that can be used to execute arbitrary code on the server, even if other parts of the connection fail.

Unauthenticated network access required.
UI API accepts caller-controlled commands.
Allows unauthenticated command execution.

Live Threat

Current exploitation, exposure, and threat context

An unauthenticated client could execute arbitrary commands on the system hosting the PraisonAI UI service. This occurs when the `/api/mcp/connect` endpoint is called without authentication, allowing a caller to control commands and arguments that are passed to start a local process. The vulnerability is present when supported by the advisory and could affect the integrity and availability of the system.

System commands and arguments.
Unauthenticated API endpoint.
Unauthorized command execution.

Operational Fix

Recommended remediation, mitigation, and detection steps

The PraisonAI UI system's default configuration exposes an unauthenticated API that allows remote code execution. Infrastructure or platform teams managing PraisonAI deployments should first identify all instances of the affected UI, determine their network reachability and business criticality, and then confirm the accountable owner for remediation. Planning for updates or other risk-mitigation strategies should follow based on this assessment.

Identify and confirm accountable owner.
Verify network exposure and criticality.
Plan remediation based on 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.

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Frequently asked questions

What is PraisonAI and how is it used?

PraisonAI is a framework designed for orchestrating multi-agent teams, which are groups of autonomous AI agents working together on complex tasks. It includes UI host applications that provide a visual interface for managing these teams, allowing users to coordinate interactions and workflows through a centralized web-based dashboard.

What does the CVE-2026-57124 vulnerability mean?

This is an OS Command Injection vulnerability (CWE-78) combined with a Missing Authentication (CWE-306) issue. It means the software fails to verify who is sending a request and improperly handles input, allowing an unauthorized person to send commands to the system. Because the application passes this input directly to a process launcher, it effectively allows remote, unauthenticated users to execute arbitrary commands with the permissions of the UI service account.

How can an attacker trigger this command injection?

An attacker triggers this by sending a specifically crafted request to the /api/mcp/connect endpoint. The vulnerability is triggered regardless of whether the final MCP connection handshake succeeds; the process initiation occurs beforehand. It does not trigger if the application is accessed through a restricted interface that is not bound to 0.0.0.0, or if valid network-level access controls prevent reaching the UI host.

Is my PraisonAI instance at risk?

According to Halo Surface Signal, this software defaults to binding its services to 0.0.0.0. This configuration makes the service listen on all network interfaces, including those reachable from the broader network or the internet. If your instance is deployed with these default settings and lacks secondary network-level protections, it is likely reachable and at higher risk.

What should I do if I run PraisonAI?

Prioritize identifying all active instances of the PraisonAI UI within your environment. Verify the current version; if you are running any version prior to 4.6.59, you are affected and should update to 4.6.59 or later immediately. While planning the update, assess the network exposure of your instances and restrict access to the UI service to authorized users only.

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.