---
id: CVE-2026-56076
title: >-
  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
summary: >-
  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-Cont…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-942
vendor: PraisonAI
product: PraisonAI
affected:
  - PraisonAI < 1.5.128
published: '2026-06-18'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T16:17:21.253'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-56076'
references:
  - url: >-
      https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x462-jjpc-q4q4
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/praisonai-cross-origin-agent-execution-via-hardcoded-wildcard-cors-and-missing-authentication-on-agui-endpoint
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x462-jjpc-q4q4
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-06-22T15:36:05.630759Z'
epss: 0.00743
epssPercentile: 0.53291
ingestedAt: '2026-10-08T16:52:14.690Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.