CVE-2026-56076

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.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x462-jjpc-q4q4
https://www.vulncheck.com/advisories/praisonai-cross-origin-agent-execution-via-hardcoded-wildcard-cors-and-missing-authentication-on-agui-endpoint
https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x462-jjpc-q4q4

Configurations

No configuration.

History

No history.

Information

Published : 2026-06-18 23:16

Updated : 2026-06-22 21:15

NVD link : CVE-2026-56076

Mitre link : CVE-2026-56076

CVE.ORG link : CVE-2026-56076

JSON object : View

Products Affected

No product.

CWE

CWE-942

Permissive Cross-domain Security Policy with Untrusted Domains

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