CVE-2026-56076: Praisonai

High severity, CVSS 8.1. EPSS: 0.6% chance of exploitation in the next 30 days.

PraisonAI before 1.5.128 contains a cross-origin agent execution vulnerability in the AGUI endpoint that allows remote attackers to trigger arbitrary agent execution. The POST /agui endpoint lacks authentication and hardcodes Access-Control-Allow-Origin: * headers, combined with Starlette's Content-Type-agnostic JSON parsing, enabling attackers to bypass CORS preflight checks via simple requests and exfiltrate sensitive agent responses including tool execution results and environment data.

Affected products

• Praisonai Praisonai: before 1.5.128 (fixed in 1.5.128)

Published 2026-06-18. Last modified 2026-10-08.