External risk intelligence

PraisonAI API Generation Defaulting to No Authentication

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-47393

The vulnerability involves a tool that generates an API server configured by default to bind to all network interfaces (0.0.0.0) with no authentication. Because the intended deployment pattern encourages exposing these endpoints (such as /chat) to handle network-based LLM orchestration, the resulting service is inherently public-facing and unauthenticated by design.

Missing Authentication

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 recently documented vulnerability affects the PraisonAI multi-agent system, specifically its code generator for API servers. By default, the generated servers may lack authentication and bind to all network interfaces, potentially exposing sensitive operations. The main concern is confirming whether your PraisonAI deployments are affected and if they are exposed externally.

Unauthenticated API servers can be exposed.
Leadership should remember this potential exposure.
Confirm relevance and exposure to PraisonAI deployments.

Attack Path

How an attacker could exploit the issue

An attacker can reach this vulnerability by targeting an unauthenticated API server that was generated by PraisonAI. This server exposes endpoints for LLM orchestration, and when supplied with user input, it processes this input without any authentication checks. The vulnerability could lead to the compromise of sensitive information, unauthorized modification of data, and disruption of service.

No authentication required to access.
Triggered by processing user-supplied input.
Risk of data compromise and disruption.

Live Threat

Current exploitation, exposure, and threat context

When PraisonAI's code generator is used without the security configuration, it creates an API server that runs user-supplied code and orchestrates LLM calls. This server binds to all network interfaces and exposes endpoints for chat and agents without requiring authentication, potentially allowing unauthorized access to its functions and the API keys present in its environment when supported by the advisory.

LLM orchestration code and API keys at risk.
Unauthenticated network access to deployed API.
Unauthorized execution of AI orchestration tasks.

Operational Fix

Recommended remediation, mitigation, and detection steps

The PraisonAI code generator can create unauthenticated API servers, posing a critical risk. Application owners, infrastructure teams, and security teams should collaborate to identify all instances of this technology, assess their exposure and business criticality, and confirm ownership. Remediation planning should prioritize the most at-risk deployments.

Confirm application ownership and deployment scope.
Verify network exposure and API endpoint usage.
Plan remediation based on identified 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 does it create API servers?

PraisonAI is a framework designed for building multi-agent AI systems. It includes a specialized code-generation tool that developers use to automatically scaffold Flask-based API servers. This generator is intended to streamline the deployment of AI-orchestration endpoints, such as those used for managing agent tasks or handling chat sessions, by turning project definitions into functional, runnable web services.

What does CWE-306 mean for CVE-2026-47393?

CWE-306 refers to a Missing Authentication for Critical Function weakness. In the context of this CVE, it means the generated API servers do not verify the identity of anyone sending requests. Because the software fails to require valid credentials by default, any user or automated script that connects to the service can interact with restricted endpoints as if they were a trusted, authorized administrator.

How can an attacker trigger this vulnerability?

An attacker triggers the flaw by sending requests to the API endpoints, such as /chat or /agents, that the generated server exposes. The vulnerability occurs because the service processes user-supplied JSON input and performs LLM orchestration tasks without any identity verification. It is important to note that simply running the code is not the trigger; the risk is realized when an unauthenticated party sends input that the server then executes or processes.

Is my deployment at risk according to Halo Surface Signal?

Halo Surface Signal indicates that this vulnerability is very likely to pose a risk because the standard deployment pattern encourages binding the API server to all network interfaces. Because these services are often intentionally made public-facing to facilitate network-based LLM orchestration, they frequently sit in locations where unauthorized external users can easily reach the unauthenticated endpoints, creating a significant security gap.

How do I fix CVE-2026-47393 in my PraisonAI environment?

The primary response is to update your software to version 4.6.40 or later, which addresses the default configuration behavior. If you are managing existing deployments, you must explicitly update your configuration to use the APIConfig class, setting auth_enabled to True and providing a secure auth_token. Prioritize identifying all active instances of these generated API servers to ensure these security controls are applied consistently across your infrastructure.

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.