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CVE-2026-40151

Medium

Description

PraisonAI is a multi-agent teams system. Prior to 4.5.128, the AgentOS deployment platform exposes a GET /api/agents endpoint that returns agent names, roles, and the first 100 characters of agent system instructions to any unauthenticated caller. The AgentOS FastAPI application has no authentication middleware, no API key validation, and defaults to CORS allow_origins=["*"] with host="0.0.0.0", making every deployment network-accessible and queryable from any origin by default. This vulnerability is fixed in 4.5.128.

SeverityMedium
CVSS5.3
Exploit probability—
ProductPraisonai
PublishedApr 9, 2026
First seenApr 9, 2026
Weakness typeCWE-200Sensitive information exposure

How to fix

Update
  • praison praisonai4.5.128 or later
  • praisonai4.5.128 or later

Affected products

ProductAffected versionsFixed in
praison praisonaiv < 4.5.1284.5.128
praisonaiPyPIv < 4.5.1284.5.128

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