Missing Authentication for Critical Function Affecting praisonai package, versions [,4.6.40)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published27 Jun 2026
- disclosed29 May 2026
- creditfoxirain
Introduced: 29 May 2026
CVE-2026-47391 (opens in a new tab)How to fix?
Upgrade PraisonAI to version 4.6.40 or higher.
Overview
PraisonAI is a PraisonAI is an AI Agents Framework with Self Reflection. PraisonAI application combines PraisonAI Agents, AutoGen, and CrewAI into a low-code solution for building and managing multi-agent LLM systems, focusing on simplicity, customisation, and efficient human-agent collaboration.
Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the calculate function. An attacker can execute arbitrary Python code in the server process by sending a crafted JSON-RPC request to the unauthenticated /a2a endpoint, which is processed by the LLM agent and results in the invocation of the unsafe tool. This can lead to full compromise of server privileges, file read/write access, credential exposure, and denial of service. This is only exploitable if the server is deployed with the unauthenticated A2A example, binds to a public interface, and registers a tool that evaluates attacker-controlled input.