CVE-2026-56076
HIGH EPSS 39.2%
Published Jun 18, 20261w ago · Modified Jun 22, 20261w ago
8.6 CVSS 4.0
Published Jun 18, 2026 1w ago
Last Modified Jun 22, 2026 1w ago
Description
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 Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction P
Scope X
Threat Intelligence
EPSS Exploit Probability
39.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-942
References 2
- github.com https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-x462-jjpc-q4q4
- vulncheck.com https://www.vulncheck.com/advisories/praisonai-cross-origin-agent-execution-via-hardcoded-wildcard-cors-and-missing-authentication-on-agui-endpoint
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.