Origin Validation Error Affecting praisonai package, versions [,4.6.58)
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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Start learning- Snyk IDSNYK-PYTHON-PRAISONAI-20158912
- published27 Sept 2026
- disclosed25 Aug 2026
- creditUnknown
Introduced: 25 Aug 2026
CVE-2026-55529 (opens in a new tab)How to fix?
Upgrade PraisonAI to version 4.6.58 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 Origin Validation Error via improper validation of the Origin header in the HTTP Stream transport. An attacker can execute arbitrary tool actions, such as reading local files or modifying application state, by enticing a user to visit a malicious webpage that leverages a crafted origin to bypass origin checks and interact with a locally running server. This is only exploitable if the server is started without an API key and the victim visits a malicious origin that matches the prefix bypass or uses a DNS-rebinding-style setup.